Professor Wolfgang Langbein

Head of Condensed Matter and Photonics Group

: Available for postgraduate supervision

I am Professor of Physics and Head of the Condensed Matter and Photonics group.

My research has the themes semiconductor nanostructures, optical spectroscopy and imaging, with specific emphasis on ultrafast and nonlinear processes, and optical resonators. I combine these themes to provide advances with a scope from fundamental physics, via materials science, to the life sciences.

Date
Type

2024

Borri, P., Payne, L., Masia, F., Esposito, M., Tasco, V., Passaseo, A. and Langbein, W. 2024. High-sensitivity detection of chiro-optical effects in single nanoparticles by four-wave mixing interferometry. ACS Photonics (10.1021/acsphotonics.4c01782)
Askey, J. et al. 2024. Direct visualization of domain wall pinning in sub-100 nm 3D magnetic nanowires with cross-sectional curvature †. Nanoscale 2024(38), pp. 17793-17803. (10.1039/d4nr02020k)
Hamilton, S., Regan, D., Payne, L., Borri, P. and Langbein, W. 2024. Quantitative measurement of graphitic sp2 on single nanodiamonds with sub-monolayer sensitivity using differential interference contrast and photo-thermal microscopy. Carbon 228, article number: 119371. (10.1016/j.carbon.2024.119371)
Gudavicius, D., Kontenis, L. and Langbein, W. 2024. Thousand foci coherent anti-Stokes Raman scattering microscopy. APL Photonics 9(8), article number: 86110. (10.1063/5.0220474)
Gudavicius, D., Kontenis, L. and Langbein, W. 2024. Dual coherent anti‐Stokes Raman scattering microscopy across the vibrational spectrum enabled by single pump optically synchronised oscillators and spectral focusing. Journal of Raman Spectroscopy 55(7), pp. 744-752. (10.1002/jrs.6671)
Payne, L., Askey, J., Pitsios, I., Ladak, S. and Langbein, W. 2024. Isotropic sub-100nm direct laser writing using spherical reflector-enabled 4Pi excitation at 405nm wavelength. Presented at: SPIE Photonics Europe 2024, Strasbourg, France, 26-30 April 2024Proceedings 3D Printed Optics and Additive Photonic Manufacturing IV, Vol. 12995. SPIE pp. 3., (10.1117/12.3021957)
Langbein, W. W., Turley, F., Regan, D. and Borri, P. 2024. Interferometric Gated Off-Axis Reflectometry (iGOR): ultrasensitive label-free tracking of nanoparticles and suspended membranes in three dimensions. Presented at: SPIE Photonics Europe 2004, Strasbourg, France, 26-30 April 2004Proceedings Unconventional Optical Imaging IV, Vol. 12996. SPIE pp. 16., (10.1117/12.3021988)
Alabdullah, F. et al. 2024. Radially polarized light in single particle optical extinction microscopy identifies silver nanoplates. Applied Physics Letters 124, article number: 181105. (10.1063/5.0188860)
Jordan, M., Androvitsaneas, P., Clark, R. N., Trapalis, A., Farrer, I., Langbein, W. and Bennett, A. J. 2024. Probing Purcell enhancement and photon collection efficiency of InAs quantum dots at nodes of the cavity electric field. Physical Review Research 6(2), article number: L022004. (10.1103/PhysRevResearch.6.L022004)
Jordan, M. et al. 2024. Quantum dot micropillar cavities with SiO2 hard mask microlenses. Presented at: SPIE OPTO, 2024, 27 January - 01 February 2024Proceedings SPIE 12896, Photonic and Phononic Properties of Engineered Nanostructures XIV. SPIE, (10.1117/12.3005342)
Pritchett, J. D. et al. 2024. Giant microwave-optical Kerr nonlinearity via Rydberg excitons in cuprous oxide. APL Photonics 9(3), article number: 31303. (10.1063/5.0192710)
Wu, Q., Xiao, D., Wang, N., Masia, F., Langbein, W. and Li, B. 2024. Rapid identification of micro and nanoplastics by line scan Raman micro-spectroscopy. Talanta 266(2), article number: 125067. (10.1016/j.talanta.2023.125067)

2023

Wink, S. M., Muljarov, E. A., Langbein, W. and Deng, H. 2023. Surface scattering amplitude for a spatially dispersive model dielectric. Physical Review B (condensed matter and materials physics) 108(24), article number: 245302. (10.1103/PhysRevB.108.245302)
Slesiona, N., Payne, L., Pope, I., Borri, P., Langbein, W. and Watson, P. 2023. Correlative extinction and single fluorophore bleaching microscopy for ligand quantification on gold nanoparticles. Advanced Materials Interfaces 10(24), article number: 2300568. (10.1002/admi.202300568)
Recchia, M. E. et al. 2023. Multiphoton microscopy and ultrafast spectroscopy: Imaging meets quantum (MUSIQ) roadmap.
Evans, O., Singh, V., Aksakal, O., Jones, D., Borri, P. and Langbein, W. 2023. Low-temperature plasmonically enhanced single-molecule spectroscopy of fluorescent proteins. Presented at: The European Conference on Lasers and Electro-Optics 2023, 26-30 June 20232023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, (10.1109/cleo/europe-eqec57999.2023.10231465)
Turley, F., Regan, D., Borri, P. and Langbein, W. 2023. Interferometric gated off-axis reflectometry (iGOR) - A label free method to measure lipid membrane dynamics and deduce biophysical properties. Presented at: The European Conference on Lasers and Electro-Optics 2023, 26-30 June 20232023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, (10.1109/cleo/europe-eqec57999.2023.10232035)
Regan, D., Mavridi-Printezi, A., Payne, L., Montalti, M., Borri, P. and Langbein, W. 2023. Optical absorption and dichroism of single melanin nanoparticles †. Analyst (10.1039/d3an00654a)
Herkert, E. K., Bermeo Alvaro, D. R., Recchia, M., Langbein, W., Borri, P. and Garcia-Parajo, M. F. 2023. Hybrid plasmonic nanostructures for enhanced single-molecule detection sensitivity. ACS Nano 17(9), pp. 8453-8464. (10.1021/acsnano.3c00576)
Pope, I., Ferreira, N. G. C., Kille, P., Langbein, W. and Borri, P. 2023. Background-free four-wave mixing microscopy of small gold nanoparticles inside a multi-cellular organ. Applied Physics Letters 122, article number: 153701. (10.1063/5.0140651)
Androvitsaneas, P. et al. 2023. Direct-write projection lithography of quantum dot micropillar single photon sources. [Online]. arXiv. Available at: https://doi.org/10.48550/arXiv.2304.00141
Pope, I. et al. 2023. Correlative light-electron microscopy using small gold nanoparticles as single probes. Light: Science & Applications 12, article number: 80. (10.1038/s41377-023-01115-4)
Sztranyovszky, Z., Langbein, W. and Muljarov, E. 2023. First-order perturbation theory of eigenmodes for systems with interfaces. Physical Review Research 5(1), article number: 13209. (10.1103/PhysRevResearch.5.013209)
Masia, F., Langbein, W., Fischer, S., Krisponeit, J. and Falta, J. 2023. Low-energy electron microscopy intensity-voltage data – factorization, sparse sampling, and classification. Journal of Microscopy 289(2), pp. 91-106. (10.1111/jmi.13155)

2022

Masia, F., Monim, N. and Langbein, W. 2022. Wavelength agile quantum dot laser for lab-on-chip optical biosensors. Presented at: IEEE Photonics Conference (IPC), Vancouver, Canada, 13-17 November 20222022 IEEE Photonics Conference (IPC) Proceedings. IEEE, (10.1109/IPC53466.2022.9975747)
Masia, F., Borri, P., Dewitte, W. and Langbein, W. 2022. Unsupervised analysis of FLIM-FRET data. Presented at: 2022 IEEE Photonics Conference (IPC), Vancouver, Canada, 13-17 November. , (10.1109/IPC53466.2022.9975544)
Masia, F., Dewitte, W., Borri, P. and Langbein, W. 2022. uFLIM - Unsupervised analysis of FLIM-FRET microscopy data. Medical Image Analysis 82, article number: 102579. (10.1016/j.media.2022.102579)
Bishop, S. G., Cannon, J. K., Yağcı, H. B., Clark, R. N., Hadden, J. P., Langbein, W. and Bennett, A. J. 2022. Evanescent-field assisted photon collection from quantum emitters under a solid immersion lens. New Journal of Physics 24, article number: 103027. (10.1088/1367-2630/ac9697)
Wang, Y., Sztranyovszky, Z., Zilli, A., Albrecht, W., Bals, S., Borri, P. and Langbein, W. 2022. Quantitatively linking morphology and optical response of individual silver nanohedra. Nanoscale 14(30), article number: 11028. (10.1039/D2NR02131E)
Askey, J., Hunt, M., Langbein, W. and Ladak, S. 2022. Asymmetric dual Bloch point domain walls in cylindrical magnetic nanowires. APL Materials 10(7), article number: 71105. (10.1063/5.0089291)
Hamilton, S., Regan, D., Payne, L., Langbein, W. and Borri, P. 2022. Sizing individual dielectric nanoparticles with quantitative differential interference contrast microscopy. Analyst 147(8), pp. 1567-1580. (10.1039/D1AN02009A)
Rogers, J. P. et al. 2022. High-resolution nanosecond spectroscopy of even-parity Rydberg excitons in Cu2O. Physical Review B 105(11), article number: 115206. (10.1103/PhysRevB.105.115206)
Sztranyovszky, Z., Langbein, W. and Muljarov, E. A. 2022. Optical resonances in graded index spheres: a resonant-state-expansion study and analytic approximations. Physical Review A 105(3), article number: 33522. (10.1103/PhysRevA.105.033522)
Allcock, T., Langbein, W. and Muljarov, E. A. 2022. Quantum mollow quadruplet in nonlinear cavity QED. Physical Review Letters 128, article number: 123602. (10.1103/PhysRevLett.128.123602)
Bishop, S. G., Hadden, J. P., Hekmati, R., Cannon, J. K., Langbein, W. W. and Bennett, A. 2022. Enhanced light collection from a gallium nitride color center using a near index-matched solid immersion lens. Applied Physics Letters 120, article number: 114001. (10.1063/5.0085257)
Santos Gomes, B., Morgan, D. J., Langbein, W., Borri, P. and Masia, F. 2022. Biofunctionalisation of gallium arsenide with neutravidin. Journal of Colloid and Interface Science 608(P3), pp. 2399-2406. (10.1016/j.jcis.2021.10.135)
Nahmad-Rohen, A., Regan, D., Borri, P. and Langbein, W. 2022. Simultaneous microscopic imaging of thickness and refractive index of thin layers by heterodyne interferometric reflectometry (HiRef). Journal of Physics D: Applied Physics 55(5), article number: 54001. (10.1088/1361-6463/ac22d4)
Alunni Cardinali, M. et al. 2022. Brillouin-Raman microspectroscopy for the morpho-mechanical imaging of human lamellar bone. Journal of the Royal Society, Interface 19(187) (10.1098/rsif.2021.0642)
Gallagher, L. A. P. et al. 2022. Microwave-optical coupling via Rydberg excitons in cuprous oxide. Physical Review Research 4(1), article number: 13031. (10.1103/PhysRevResearch.4.013031)
Wang, Y., Pope, I., Brennan-Craddock, H., Poole, E., Langbein, W., Borri, P. and Swann, K. 2022. A primary effect of palmitic acid on mouse oocytes is the disruption of the structure of the endoplasmic reticulum. Reproduction 163(1), pp. 45-56. (10.1530/REP-21-0332)

2021

Boorman, D., Pope, I., Masia, F., Langbein, W., Hood, S., Borri, P. and Watson, P. 2021. Hyperspectral CARS microscopy and quantitative unsupervised analysis of deuterated and non-deuterated fatty acid storage in human cells. The Journal of Chemical Physics 155(22), article number: 224202. (10.1063/5.0065950)
Boorman, D., Pope, I., Masia, F., Watson, P., Borri, P. and Langbein, W. 2021. Quantification of the nonlinear susceptibility of the hydrogen and deuterium stretch vibration for biomolecules in coherent Raman microspectroscopy. Journal of Raman Spectroscopy 52(9), pp. 1540-1551. (10.1002/jrs.6164)
Lynch, S. A. et al. 2021. Rydberg excitons in synthetic cuprous oxide (Cu2O). Physical Review Materials 5(8), article number: 86402. (10.1103/PhysRevMaterials.5.084602)
Pope, I. et al. 2021. Background-free 3D four-wave mixing microscopy of single gold nanoparticles inside biological systems. Presented at: European Conference on Biomedical Optics 2021, Munich, Germany, 20-24 June 2021European Conferences on Biomedical Optics 2021 (ECBO). OSA Technical Digest Optical Society of America pp. EM3B.6.
Cookson, T. et al. 2021. Geometric frustration in polygons of polariton condensates creating vortices of varying topological charge. Nature Communications 12, article number: 2120. (10.1038/s41467-021-22121-3)
Pope, I. et al. 2021. Identifying subpopulations in multicellular systems by quantitative chemical imaging using label-free hyperspectral CARS microscopy. Analyst 146(7), pp. 2277-2291. (10.1039/D0AN02381G)
Payne, L. M., Masia, F., Zilli, A., Albrecht, W., Borri, P. and Langbein, W. 2021. Quantitative morphometric analysis of single gold nanoparticles by optical extinction microscopy: material permittivity and surface damping effects. Journal of Chemical Physics 154, article number: 44702. (10.1063/5.0031012)
Tikhodeev, S. G., Muljarov, E. A., Langbein, W., Gippius, N. A., Giessen, H. and Weiss, T. 2021. Influence of disorder on a Bragg microcavity. Journal of the Optical Society of America B 38(1), pp. 139-150. (10.1364/JOSAB.402986)

2020

Nahmad-Rohen, A., Regan, D., Masia, F., McPhee, C., Pope, I., Langbein, W. and Borri, P. 2020. Quantitative label-free imaging of lipid domains in single bilayers by hyperspectral coherent Raman scattering. Analytical Chemistry 92(21) (10.1021/acs.analchem.0c03179)
Karuna, A. et al. 2020. Quantitative imaging of B1 cyclin expression across the cell cycle using green fluorescent protein tagging and epi-fluorescence. Cytometry Part A 97(10), pp. 1066-1072. (10.1002/cyto.a.24038)
Payne, L. M., Albrecht, W., Langbein, W. and Borri, P. 2020. The optical nanosizer – quantitative size and shape analysis of individual nanoparticles by high-throughput widefield extinction microscopy. Nanoscale 12(30), pp. 16215-16228. (10.1039/D0NR03504A)
Bishop, S., Hadden, J., Alzahrani, F., Hekmati, R., Huffaker, D., Langbein, W. and Bennett, A. 2020. Room-temperature quantum emitter in aluminum nitride. ACS Photonics 7(7), pp. 1636-1641. (10.1021/acsphotonics.0c00528)
Wang, Y., Zilli, A., Sztranyovszky, Z., Langbein, W. and Borri, P. 2020. Quantitative optical microspectroscopy, electron microscopy, and modelling of individual silver nanocubes reveals surface compositional changes at the nanoscale. Nanoscale Advances 2(6), pp. 2485-2496. (10.1039/D0NA00059K)
Askey, J., Hunt, M. O., Langbein, W. and Ladak, S. 2020. Use of two-photon lithography with a negative resist and processing to realise cylindrical magnetic nanowires. Nanomaterials 10(3), article number: 429. (10.3390/nano10030429)
Giannakopoulou, N. et al. 2020. Four-wave-mixing microscopy reveals non-colocalisation between gold nanoparticles and fluorophore conjugates inside cells. Nanoscale 12(7), pp. 4622-4635. (10.1039/C9NR08512B)
Sehmi, H., Langbein, W. and Muljarov, E. 2020. Applying the resonant-state expansion to realistic materials with frequency dispersion. Physical Review B 101(4), article number: 45304. (10.1103/PhysRevB.101.045304)
Lloyd, D. et al. 2020. Functional imaging of a model unicell: Spironucleus vortens as an anaerobic but aerotolerant flagellated protist. Advances in Microbial Physiology 76, pp. 41-79. (10.1016/bs.ampbs.2020.01.002)

2019

Lobanov, S., Langbein, W. and Muljarov, E. 2019. Resonant-state expansion applied to three-dimensional open optical systems: Complete set of static modes. Physical Review A 100(6), pp. -., article number: 63811. (10.1103/PhysRevA.100.063811)
Regan, D., Williams, J., Borri, P. and Langbein, W. 2019. Lipid Bilayer thickness measured by quantitative DIC reveals phase transitions and effects of substrate hydrophilicity. Langmuir 35(43), pp. 13805-13814. (10.1021/acs.langmuir.9b02538)
Brodu, A. et al. 2019. Fine structure of nearly isotropic bright excitons in InP/ZnSe colloidal quantum dots. Journal of Physical Chemistry Letters 10(18), pp. 5468-5475. (10.1021/acs.jpclett.9b01824)
Zilli, A., Langbein, W. and Borri, P. 2019. Quantitative measurement of the optical cross-sections of single nano-objects by correlative transmission and scattering micro-spectroscopy. ACS Photonics 6(8), pp. 2149-2160. (10.1021/acsphotonics.9b00727)
Scarpelli, L. et al. 2019. 99% beta factor and directional coupling of quantum dots to fast light in photonic crystal waveguides determined by spectral imaging. Physical Review B 100(3), article number: 35311. (10.1103/PhysRevB.100.035311)
Bradley, J., Pope, I., Wang, Y., Langbein, W., Borri, P. and Swann, K. 2019. Dynamic label-free imaging of lipid droplets and their link to fatty acid and pyruvate oxidation in mouse eggs. Journal of Cell Science 132(13), article number: jcs228999. (10.1242/jcs.228999)
Payne, L., Zilli, A., Wang, Y., Langbein, W. and Borri, P. 2019. Quantitative high-throughput optical sizing of individual colloidal nanoparticles by wide-field imaging extinction microscopy. Presented at: SPIE BIOS, San Francisco, CA, USA, 2-7 February 2019Proceedings Volume 10892, Colloidal Nanoparticles for Biomedical Applications XIV, Vol. 108920. Society of Photo-Optical Instrumentation Engineers (SPIE) pp. 17., (10.1117/12.2507632)
Borri, P., Giannakopoulou, N., Zoriniants, G., Pope, I., Masia, F., Watson, P. and Langbein, W. 2019. Imaging and tracking single plasmonic nanoparticles in 3D background-free with four-wave mixing interferometry. Presented at: SPIE BIOS, San Francisco, CA, USA, 2-7 February 2019Proceedings Volume 10894, Plasmonics in Biology and Medicine XVI, Vol. 108940. Society of Photo-Optical Instrumentation Engineers (SPIE) pp. 34., (10.1117/12.2507618)
Boorman, D., Pope, I., Langbein, W., Hood, S., Borri, P. and Watson, P. 2019. Optimisation of multimodal coherent anti-Stokes Raman scattering microscopy for the detection of isotope-labelled molecules. Presented at: SPIE BIOS, San Francisco, CA, USA, 2-7 February 2019Proceedings Volume 10890, Label-free Biomedical Imaging and Sensing (LBIS) 2019, Vol. 108900. Society of Photo-Optical Instrumentation Engineers (SPIE) pp. 4., (10.1117/12.2509280)
Langbein, W., Harlow, D. S., Regan, D., Pope, I. and Borri, P. 2019. Heterodyne dual-polarization epi-detected CARS microscopy for chemical and topographic imaging of interfaces. Presented at: SPIE BIOS, San Francisco, California, US, 2-7 Feb 2019Label-free Biomedical Imaging and Sensing (LBIS) 2019, Vol. 10890. Bellingham, Washington: Society of Photo-optical Instrumentation Engineers (SPIE), (10.1117/12.2507636)
Borri, P., Bradley, J., Pope, I., Langbein, W. and Swann, K. 2019. Imaging lipids in living mammalian oocytes and early embryos by coherent Raman scattering microscopy. Presented at: SPIE BIOS, San Francisco, CA, USA, 2-7 February 2019Proceedings Volume 10890, Label-free Biomedical Imaging and Sensing (LBIS) 2019, Vol. 108900. Society of Photo-Optical Instrumentation Engineers (SPIE) pp. 3., (10.1117/12.2506248)
Regan, D., Williams, J., Masia, F., Borri, P. and Langbein, W. 2019. Measuring sub-nanometre thickness changes during phase transitions of supported lipid bilayers with quantitative differential interference contrast microscopy. Presented at: SPIE BIOS, San Francisco, California, US, 2-7 Feb 2019Quantitative Phase Imaging V, Vol. 10887. Proceedings of SPIE Bellingham, Washington: SPIE, (10.1117/12.2510461)
Scarpelli, L. et al. 2019. Propagation loss in photonic crystal waveguides embedding InAs/GaAs quantum dots determined by direct spectral imaging. Presented at: SPIE OPTO:, San Francisco, CA, USA, 2-7 February 2019Proceedings Volume 10916, Ultrafast Phenomena and Nanophotonics XXIII, Vol. 109161. Society of Photo-Optical Instrumentation Engineers (SPIE) pp. 42., (10.1117/12.2510478)
Karuna, A., Masia, F., Wiltshire, M., Errington, R., Borri, P. and Langbein, W. 2019. Label-free volumetric quantitative imaging of human osteosarcoma cells by hyperspectral coherent anti-Stokes Raman scattering. Presented at: SPIE BIOS, San Francisco, California, US, 2-7 Feb 2019Multiphoton Microscopy in the Biomedical Sciences XIX, Vol. 10882. Proceedings of SPIE Bellingham, Washington: SPIE pp. 108821P., (10.1117/12.2510277)
Karuna, A., Masia, F., Wiltshire, M., Errington, R., Borri, P. and Langbein, W. 2019. Label-free volumetric quantitative imaging of the human somatic cell division by hyperspectral coherent anti-Stokes Raman scattering. Analytical Chemistry 91(4), pp. 2813-2821. (10.1021/acs.analchem.8b04706)
Jakubczyk, T. et al. 2019. Coherence and density dynamics of excitons in a single-layer MoS2 reaching the homogeneous limit. ACS Nano 13(3), pp. 3500-3511. (10.1021/acsnano.8b09732)

2018

Palombo, F., Masia, F., Mattana, S., Tamagnini, F., Borri, P., Langbein, W. and Fioretto, D. 2018. Hyperspectral analysis applied to micro-Brillouin maps of amyloid-beta plaques in Alzheimer’s brain. Analyst 143, pp. 6095-6102. (10.1039/C8AN01291A)
Becker, M. A. et al. 2018. Long exciton dephasing time and coherent phonon coupling in CsPbBr2Cl perovskite nanocrystals. Nano Letters 18(12), pp. 7546-7551. (10.1021/acs.nanolett.8b03027)
Pope, I. et al. 2018. Coherent Raman Scattering microscopy: technology developments and biological applications. Presented at: 20th International Conference on Transparent Optical Networks (ICTON), Bucharest, Romania, 1-5 Jul 201820th International Conference on Transparent Optical Networks (ICTON). IEEE, (10.1109/ICTON.2018.8473706)
Borri, P., Zorinyants, G., Giannakopoulou, P., Masia, F., Pope, I. and Langbein, W. 2018. Imaging and tracking single plasmonic nanoparticles in 3D background-free with four-wave mixing interferometry. Presented at: International Conference on Transparent Optical Networks, Bucharest, Romania, 1-5 Jul 201820th International Conference on Transparent Optical Networks (ICTON). IEEE, (10.1109/ICTON.2018.8473874)
Lobanov, S., Langbein, W. and Muljarov, E. 2018. Resonant-state expansion of three-dimensional open optical systems: Light scattering. Physical Review A 98, article number: 33820. (10.1103/PhysRevA.98.033820)
Langbein, W. 2018. No exceptional precision of exceptional point sensors. Physical Review A 98, article number: 23805. (10.1103/PhysRevA.98.023805)
Langbein, W., Regan, D., Pope, I. and Borri, P. 2018. Heterodyne dual-polarization epi-detected CARS microscopy for chemical and topographic imaging of interfaces. APL Photonics 3, article number: 92402. (10.1063/1.5027256)
Masia, F., Glen, A., Stephens, P., Langbein, W. and Borri, P. 2018. Label-free quantitative chemical imaging and classification analysis of adipogenesis using mouse embryonic stem cells. Journal of Biophotonics 11(7), article number: e201700219. (10.1002/jbio.201700219)
Jakubczyk, T., Nogajewski, K., Molas, M. R., Bartos, M., Langbein, W., Potemski, M. and Kasprzak, J. 2018. Impact of environment on dynamics of exciton complexes in a WS2 monolayer. 2D Materials 5(3), article number: 31007. (10.1088/2053-1583/aabc1c)
Armitage, L. J., Doost, M. B., Langbein, W. and Muljarov, E. 2018. Erratum: resonant-state expansion applied to planar waveguides. Physical Review A 97, article number: 49901. (10.1103/PhysRevA.97.049901)
Masia, F., Pope, I., Watson, P., Langbein, W. and Borri, P. 2018. Bessel-beam hyperspectral CARS microscopy with sparse sampling: enabling high-content high-throughput label-free quantitative chemical imaging. Analytical Chemistry 90(6), pp. 3775-3785. (10.1021/acs.analchem.7b04039)
Payne, L., Langbein, W. and Borri, P. 2018. Wide-field imaging of single nanoparticle extinction with sub-nm2 sensitivity. Physical Review Applied 9, article number: 34006. (10.1103/PhysRevApplied.9.034006)
Sehmi, H. S., Langbein, W. and Mulyarov, E. 2018. Optimizing the Drude-Lorentz model for material permittivity: Examples for semiconductors. Presented at: 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), St. Petersburg, Russia, 22-25 May 2017Progress In Electromagnetics Research Symposium - Spring (PIERS) , 2017. IEEE pp. 994-1000., (10.1109/PIERS.2017.8261889)

2017

Zoriniants, G., Masia, F., Giannakopoulou, N., Langbein, W. and Borri, P. 2017. Background-free 3D nanometric localization and sub-nm asymmetry detection of single plasmonic nanoparticles by four-wave mixing interferometry with optical vortices. Physical Review X 7(4), article number: 41022. (10.1103/PhysRevX.7.041022)
Berloff, N. G. et al. 2017. Realizing the classical XY Hamiltonian in polariton simulators. Nature Materials 16, pp. 1120-1126. (10.1038/nmat4971)
Delmonte, V. et al. 2017. Coherent coupling of individual quantum dots measured with phase-referenced two-dimensional spectroscopy: photon echo versus double quantum coherence. Physical Review B 96, article number: 041124(R). (10.1103/PhysRevB.96.041124)
Weiss, T., Schäferling, M., Giessen, H., Gippius, N. A., Tikhodeev, S. G., Langbein, W. and Muljarov, E. 2017. Analytical normalization of resonant states in photonic crystal slabs and periodic arrays of nanoantennas at oblique incidence. Physical Review B 96(4), article number: 45129. (10.1103/PhysRevB.96.045129)
Scarpelli, L., Masia, F., Alexeev, E. M., Withers, F., Tartakovskii, A. I., Novoselov, K. S. and Langbein, W. W. 2017. Resonantly excited exciton dynamics in two-dimensional MoSe2 monolayers. Physical Review B 96(4), article number: 45407. (10.1103/PhysRevB.96.045407)
Muljarov, E. and Langbein, W. 2017. Comment on "normalization of quasinormal modes in leaky optical cavities and plasmonic resonators". Physical Review A 96(1), article number: 17801. (10.1103/PhysRevA.96.017801)
Lobanov, S., Zorinyants, G., Langbein, W. W. and Muljarov, E. 2017. Resonant-state expansion of light propagation in nonuniform waveguides. Physical Review A 95(5), article number: 53848. (10.1103/PhysRevA.95.053848)
Sehmi, H., Langbein, W. and Muljarov, E. 2017. Optimizing the Drude-Lorentz model for material permittivity: Method, program, and examples for gold, silver, and copper. Physical Review B 95(11), article number: 115444. (10.1103/PhysRevB.95.115444)
Wagner, H. P., Kaveh, M., Gao, Q., Tan, H., Jagadish, C. and Langbein, W. 2017. Population dynamics and dephasing of excitons and electron-hole pairs in polytype wurtzite/zinc-blende InP nanowires. Physical Review B 95(4), article number: 45305. (10.1103/PhysRevB.95.045305)
Payne, L., Langbein, W. W. and Borri, P. 2017. Erratum: Polarization-resolved extinction and scattering cross-section of individual gold nanoparticles measured by wide-field microscopy on a large ensemble [Appl. Phys. Lett. 102, 131107 (2013)]. Applied Physics Letters, pp. -.

2016

Muljarov, E. A. and Langbein, W. 2016. Exact mode volume and Purcell factor of open optical systems. Physical Review B 94(23), article number: 235438. (10.1103/PhysRevB.94.235438)
Jakubczyk, T. et al. 2016. Impact of phonons on dephasing of individual excitons in deterministic quantum dot microlenses. ACS Photonics 3(12), pp. 2461-2466. (10.1021/acsphotonics.6b00707)
Jakubczyk, T. et al. 2016. Radiatively limited dephasing and exciton dynamics in MoSe2 monolayers revealed with four-wave mixing microscopy. Nano Letters 16(9), pp. 5333-5339. (10.1021/acs.nanolett.6b01060)
Karuna, A., Masia, F., Borri, P. and Langbein, W. W. 2016. Hyperspectral volumetric coherent anti-Stokes Raman scattering microscopy: quantitative volume determination and NaCl as non-resonant standard. Journal of Raman Spectroscopy 47(9), pp. 1167-1173. (10.1002/jrs.4876)
Bradley, J., Pope, I., Masia, F., Sanusi, R., Langbein, W., Swann, K. and Borri, P. 2016. Quantitative imaging of lipids in live mouse oocytes and early embryos using CARS microscopy. Development 143, pp. 2238-2247. (10.1242/dev.129908)
Weiss, T., Mesch, M., Schäferling, M., Giessen, H., Langbein, W. and Muljarov, E. A. 2016. From dark to bright: First-order perturbation theory with analytical mode normalization for plasmonic nanoantenna arrays applied to refractive index sensing. Physical Review Letters 116(23), article number: 237401. (10.1103/PhysRevLett.116.237401)
Di Napoli, C., Pope, I., Masia, F., Langbein, W., Watson, P. and Borri, P. 2016. Quantitative spatiotemporal chemical profiling of individual lipid droplets by hyperspectral CARS microscopy in living human adipose-derived stem cells. Analytical Chemistry 88(7), pp. 3677-3685. (10.1021/acs.analchem.5b04468)
Mermillod, Q. et al. 2016. Dynamics of excitons in individual InAs quantum dots revealed in four-wave mixing spectroscopy. Optica 3(4), pp. 377-384. (10.1364/OPTICA.3.000377)
Muljarov, E. A. and Langbein, W. 2016. Resonant-state expansion of dispersive open optical systems: Creating gold from sand. Physical Review B 93(7), article number: 75417. (10.1103/PhysRevB.93.075417)
Fras, F. et al. 2016. Multi-wave coherent control of a solid-state single emitter. Nature Photonics 10(3), pp. 155-158. (10.1038/nphoton.2016.2)
Borri, P., Langbein, W. and Masia, F. 2016. Surface plasmon four-wave mixing microscopy. US8817261 B2 [Patent].

2015

Zajac, J. M. and Langbein, W. W. 2015. Parametric scattering of microcavity polaritons into ghost branches. Physical Review B: Condensed Matter and Materials Physics 92(16), article number: 165305. (10.1103/PhysRevB.92.165305)
Cilibrizzi, P., Ohadi, H., Ostatnicky, T., Askitopoulos, A., Langbein, W. W. and Lagoudakis, P. 2015. Cilibrizziet al.Reply:. Physical Review Letters 115(8), article number: 89402. (10.1103/PhysRevLett.115.089402)
Masia, F., Karuna, A., Borri, P. and Langbein, W. W. 2015. Hyperspectral image analysis for CARS, SRS, and Raman data. Journal of Raman Spectroscopy 46(8), pp. 727-734. (10.1002/jrs.4729)
Payne, L. et al. 2015. Optical micro-spectroscopy of single metallic nanoparticles: quantitative extinction and transient resonant four-wave mixing. Faraday Discussions 184, pp. 305-320. (10.1039/C5FD00079C)
Naeem, A., Masia, F., Christodoulou, S., Moreels, I., Borri, P. and Langbein, W. 2015. Giant exciton oscillator strength and radiatively limited dephasing in two-dimensional platelets. Physical Review B 91(12), article number: 121302(R). (10.1103/PhysRevB.91.121302)

2014

Pope, I. et al. 2014. Coherent anti-Stokes Raman scattering microscopy of single nanodiamonds. Nature Nanotechnology 9(11), pp. 940-946. (10.1038/nnano.2014.210)
Cilibrizzi, P. et al. 2014. Polariton condensation in a strain-compensated planar microcavity with InGaAs quantum wells. Applied Physics Letters 105(19), article number: 191118. (10.1063/1.4901814)
Cilibrizzi, P., Ohadi, H., Ostatnicky, T., Askitopoulos, A., Langbein, W. W. and Lagoudakis, P. 2014. Linear wave dynamics explains observations attributed to dark solitons in a polariton quantum fluid. Physical Review Letters 113(10), article number: 103901. (10.1103/PhysRevLett.113.103901)
Doost, M. B., Langbein, W. and Muljarov, E. A. 2014. Resonant-state expansion applied to three-dimensional open optical systems. Physical Review A 90(1), article number: 13834. (10.1103/PhysRevA.90.013834)
Armitage, L. J., Doost, M. B., Langbein, W. and Muljarov, E. A. 2014. Resonant-state expansion applied to planar waveguides. Physical Review A 89(5), article number: 53832. (10.1103/PhysRevA.89.053832)
Di Napoli, C., Pope, I., Masia, F., Watson, P. D., Langbein, W. W. and Borri, P. 2014. Hyperspectral and differential CARS microscopy for quantitative chemical imaging in human adipocytes. Biomedical Optics Express 5(5), pp. 1378-1390. (10.1364/BOE.5.001378)
Masia, F., Borri, P. and Langbein, W. W. 2014. Sparse sampling for fast hyperspectral coherent anti-Stokes Raman scattering imaging. Optics Express 22(4), pp. 4021-4028. (10.1364/OE.22.004021)
Di Napoli, C., Masia, F., Pope, I., Otto, C., Langbein, W. W. and Borri, P. 2014. Chemically-specific dual/differential CARS micro-spectroscopy of saturated and unsaturated lipid droplets. Journal of Biophotonics 7(1-2), pp. 68-76. (10.1002/jbio.201200197)
Langbein, W. W. and Borri, P. 2014. Resonant nonlinear optical microscopy. Presented at: International School of Physics 'Enrico Fermi', Varenna, Italy, 12-22 July 2011 Presented at Pavone, F. S., So, P. T. C. and French, P. M. W. eds.Microscopy Applied to biophotonics: Proceedings of the International School of Physics 'Enrico Fermi', Course 181. Proceedings of the International School of Physics 'Enrico Fermi' Vol. 181. Amsterdam: IOS Press; Ohmsha; 1999 pp. 141-173., (10.3254/978-1-61499-413-8-141)

2013

Stephens, P., Glen, A., Masia, F., Borri, P. and Langbein, W. W. 2013. Nondestructive imaging of stem cells and their differentiated progeny. Wound Repair and Regeneration 21(6), pp. A84-A84.
Zumbusch, A., Langbein, W. W. and Borri, P. 2013. Nonlinear vibrational microscopy applied to lipid biology. Progress in Lipid Research 52(4), pp. 615-632. (10.1016/j.plipres.2013.07.003)
McPhee, C., Zoriniants, G., Langbein, W. W. and Borri, P. 2013. Measuring the lamellarity of giant lipid vesicles with differential interference contrast microscopy. Biophysical Journal 105(6), pp. 1414-1420. (10.1016/j.bpj.2013.07.048)
Li, B., Borri, P. and Langbein, W. W. 2013. Dual/differential coherent anti-Stokes Raman scattering module for multiphoton microscopes with a femtosecond Ti:sapphire oscillator. Journal of Biomedical Optics 18(6), article number: 66004. (10.1117/1.JBO.18.6.066004)
Kasprzak, J., Portolan, S., Rastelli, A., Wang, L., Plumhof, J. D., Schmidt, O. G. and Langbein, W. W. 2013. Vectorial nonlinear coherent response of a strongly confined exciton-biexciton system. New Journal of Physics 15, article number: 55006. (10.1088/1367-2630/15/5/055006)
Doost, M., Langbein, W. W. and Muljarov, E. A. 2013. Resonant state expansion applied to two-dimensional open optical systems. Physical Review A 87(4), article number: 43827. (10.1103/PhysRevA.87.043827)
Albert, F. et al. 2013. Microcavity controlled coupling of excitonic qubits. Nature Communications 4, article number: 1747. (10.1038/ncomms2764)
Payne, L. M., Langbein, W. W. and Borri, P. 2013. Polarization-resolved extinction and scattering cross-sections of individual gold nanoparticles measured by wide-field microscopy on a large ensemble. Applied Physics Letters 102(13), article number: 131107. (10.1063/1.4800564)
Kasprzak, J. et al. 2013. Coherence dynamics and quantum-to-classical crossover in an exciton-cavity system in the quantum strong coupling regime. New Journal of Physics 15, article number: 45013. (10.1088/1367-2630/15/4/045013)
Pope, I., Langbein, W. W., Watson, P. D. and Borri, P. 2013. Simultaneous hyperspectral differential-CARS, TPF and SHG microscopy with a single 5 fs Ti:Sa laser. Optics Express 21(6), pp. 7096-7106. (10.1364/OE.21.007096)
Rocha-Mendoza, I., Borri, P. and Langbein, W. W. 2013. Quadruplex CARS micro-spectroscopy. Journal of Raman Spectroscopy 44(2), pp. 255-261. (10.1002/jrs.4181)
Masia, F., Langbein, W. W. and Borri, P. 2013. Polarization-resolved ultrafast dynamics of the complex polarizability in single gold nanoparticles. Physical Chemistry Chemical Physics 15(12), pp. 4226-4232. (10.1039/C2CP43451B)
Wagner, H. P., Schmitzer, H., Lutti, J., Borri, P. and Langbein, W. W. 2013. Effects of uniaxial pressure on polar whispering gallery modes in microspheres. Journal of Applied Physics 113(24), article number: 243101. (10.1063/1.4811447)
Masia, F., Glen, A., Stephens, P., Borri, P. and Langbein, W. W. 2013. Quantitative chemical imaging and unsupervised analysis using hyperspectral coherent anti-Stokes Raman scattering microscopy. Analytical Chemistry 85(22), pp. 10820-10828. (10.1021/ac402303g)

2012

Masia, F., Accanto, N., Langbein, W. W. and Borri, P. 2012. Masia et al. reply. Physical Review Letters 109(22), article number: 229702. (10.1103/PhysRevLett.109.229702)
Accanto, N., Masia, F., Moreels, I., Hens, Z., Langbein, W. W. and Borri, P. 2012. Engineering the spin-flip limited exciton dephasing in colloidal CdSe/CdS quantum dots. Acs Nano 6(6), pp. 5227-5233. (10.1021/nn300992a)
Doost, M., Langbein, W. W. and Muljarov, E. A. 2012. Resonant-state expansion applied to planar open optical systems. Physical review A 85(2), article number: 23835. (10.1103/PhysRevA.85.023835)
Pope, I., Langbein, W. W., Borri, P. and Watson, P. D. 2012. Live cell imaging with chemical specificity using dual frequency CARS microscopy. In: Conn, P. M. ed. Imaging and Spectroscopic Analysis of Living Cells — Optical and Spectroscopic Techniques. Methods in Enzymology Vol. 504. Amsterdam: Elsevier, pp. 273-291., (10.1016/B978-0-12-391857-4.00014-8)
Masia, F., Accanto, N., Langbein, W. W. and Borri, P. 2012. Spin-flip limited exciton dephasing in CdSe/ZnS colloidal quantum dots. Physical Review Letters 108(8), article number: 87401. (10.1103/PhysRevLett.108.087401)
Masia, F., Langbein, W. W. and Borri, P. 2012. Measurement of the dynamics of plasmons inside individual gold nanoparticles using a femtosecond phase-resolved microscope. Physical Review B: Condensed Matter and Materials Physics 85(23), pp. 235403-235413. (10.1103/PhysRevB.85.235403)
Omari, A. et al. 2012. Role of interband and photoinduced absorption in the nonlinear refraction and absorption of resonantly excited PbS quantum dots around 1550 nm. Physical Review B: Condensed Matter and Materials Physics 85(11), pp. 115318-115328. (10.1103/PhysRevB.85.115318)

2011

Masia, F., Moreels, I., Hens, Z., Langbein, W. and Borri, P. 2011. Ultrafast exciton dephasing in PbS colloidal quantum dots. Presented at: Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference, Munich, Germany, 22-26 May 2011 Presented at Masia, F. et al. eds.2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC 2011). Institute of Electrical and Electronics Engineers ( IEEE ) pp. 1., (10.1109/CLEOE.2011.5943583)
Masia, F., Langbein, W. W., Moreels, I., Hens, Z. and Borri, P. 2011. Exciton dephasing in lead sulfide quantum dots by X-point phonons. Physical Review B 83(20), article number: 201309. (10.1103/PhysRevB.83.201309)
Langbein, W. W., Rocha-Mendoza, I., Masia, F., Di Napoli, C., Pope, I., Watson, P. D. and Borri, P. 2011. Differential CARS microscopy with linearly chirped femtosecond laser pulses. Presented at: Multiphoton Microscopy in the Biomedical Sciences XI, San Francisco, CA, USA, 23-25 January 2011 Presented at Periasamy, A., König, K. and So, P. T. C. eds.Multiphoton Microscopy in the Biomedical Sciences XI, Vol. 7903. SPIE Proceedings SPIE pp. 79031I., (10.1117/12.873872)
Masia, F., Langbein, W. W., Watson, P. D. and Borri, P. 2011. Triply surface-plasmon resonant four-wave mixing imaging of gold nanoparticles. Presented at: Plasmonics in Biology and Medicine VIII, San Francisco, CA, USA, 23-24 January 2011 Presented at Vo-Dinh, T. and Lakowicz, J. R. eds.Plasmonics in Biology and Medicine VIII, Vol. 7911. Proceedings of SPIE S P I E - International Society for Optical Engineering pp. 79110Y., (10.1117/12.873883)
Borri, P. and Langbein, W. W. 2011. Ultrafast conditional carrier dynamics in semiconductor quantum dots. Presented at: Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV, San Francisco, CA, USA, 23-26 January 2011 Presented at Tsen, K. et al. eds.Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV, Vol. 7937. Proceedings of SPIE SPIE pp. 793704., (10.1117/12.873835)
Maragkou, M. et al. 2011. Optical analogue of the spin hall effect in a photonic cavity. Optics Letters 36(7), pp. 1095-1097. (10.1364/OL.36.001095)
Pope, I., Langbein, W. W., Borri, P. and Watson, P. D. 2011. CARS imaging for high throughput microscopy. Biotech International 23(Apr/Ma), pp. 11-13.

2010

Langbein, W. W., Cesari, V., Masia, F., Krysa, A., Borri, P. and Smowton, P. M. 2010. Ultrafast gain dynamics in InP quantum-dot optical amplifiers. Applied Physics Letters 97(21), article number: 211103. (10.1063/1.3518715)
Cesari, V., Langbein, W. W. and Borri, P. 2010. Dephasing of excitons and multiexcitons in undoped and p-doped InAs/GaAs quantum dots-in-a-well. Physical Review B 82(19), article number: 195314. (10.1103/PhysRevB.82.195314)
Masia, F., Moreels, I., Hens, Z., Langbein, W. W. and Borri, P. 2010. Four-wave-mixing imaging and carrier dynamics of PbS colloidal quantum dots. Physical Review B 82(15), article number: 155302. (10.1103/PhysRevB.82.155302)
Borri, P., Cesari, V. and Langbein, W. W. 2010. Measurement of the ultrafast gain recovery in InGaAs/GaAs quantum dots: beyond a mean-field description. Physical Review B 82(11), article number: 115326. (10.1103/PhysRevB.82.115326)
Masia, F., Langbein, W. W., Borri, P. and Watson, P. D. 2010. Four-wave mixing imaging to study protein entry and release in mammalian cells [Abstract]. Drug Discovery Today 15(23-24), pp. 1089. (10.1016/j.drudis.2010.09.377)
Kasprzak, J. et al. 2010. Up on the Jaynes-Cummings ladder of a quantum-dot/microcavity system. Nature Materials 9(4), pp. 304-308. (10.1038/nmat2717)
Kasprzak, J., Patton, B. R., Savona, V. and Langbein, W. W. 2010. Coherent coupling between distant excitons revealed by two-dimensional nonlinear hyperspectral imaging. Nature Photonics 5(1), pp. 57-63. (10.1038/nphoton.2010.284)
Muljarov, E. A., Langbein, W. W. and Zimmermann, R. 2010. Brillouin-Wigner perturbation theory in open electromagnetic systems. Europhysics Letters 92(5), article number: 50010. (10.1209/0295-5075/92/50010)
Creatore, C., Mouchliadis, L., Biancalana, F., Osborne, S. and Langbein, W. W. 2010. Exciton-polaritons in Bragg gratings. Journal of Physics: Conference Series 210, article number: 12034. (10.1088/1742-6596/210/1/012034)
Kasprzak, J. et al. 2010. Up on the Jaynes-Cummings ladder of an exciton-cavity system. Presented at: Ultrafast phenomena in semiconductors and nanostructure materials XIV, San Francisco, CA, USA, 24-27 January 2010 Presented at Song, J. J. et al. eds.Proceedings of the Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV conference, San Francisco, USA, 24 January 2010, Vol. 7600. Proceedings of SPIE Bellingham, WA: SPIE pp. 760015., (10.1117/12.838372)
Langbein, W. W. 2010. Coherent optical spectroscopy of semiconductor nanostructures. La Rivista del Nuovo cimento 33(5), pp. 255-312. (10.1393/ncr/i2010-10054-1)

2009

Langbein, W. W., Watson, P. D. and Borri, P. 2009. Four-wave mixing of gold nanoparticles for three-dimensional cell microscopy. Presented at: Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on, Munich, Germany, 14-19 June 2009 Presented at Masia, F. et al. eds.2009 Conference on Lasers & Electro-Optics Europe & 11th European Quantum Electronics Conference (CLEO EUROPE/EQEC 2009). Institute of Electrical and Electronics Engineers ( IEEE ), (10.1109/CLEOE-EQEC.2009.5191714)
Borri, P., Arekar, T., Cesari, V., Rossetti, M., Fiore, A. and Langbein, W. 2009. Ultrafast pulse-pair amplification in InGaAs quantum-dot amplifiers. Presented at: Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on, Munich, Germany, 14-19 June 2009 Presented at Borri, P. et al. eds. Institute of Electrical and Electronics Engineers ( IEEE ) pp. 1., (10.1109/CLEOE-EQEC.2009.5192634)
Langbein, W., Rocha-Mendoza, I. and Borri, P. 2009. CARS Microscopy using linearly-chirped ultrafast laser pulses. Presented at: Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on, Munich, Germany, 14-19 June 2009 Presented at Langbein, W. W., Rocha-Mendoza, I. and Borri, P. eds. Institute of Electrical and Electronics Engineers ( IEEE ) pp. 1., (10.1109/CLEOE-EQEC.2009.5194775)
Masia, F., Langbein, W. W., Watson, P. D. and Borri, P. 2009. Resonant four-wave mixing of gold nanoparticles for three-dimensional cell microscopy. Optics Letters 34(12), pp. 1816-1818. (10.1364/OL.34.001816)
Masia, F., Langbein, W. W. and Borri, P. 2009. Novel multi-photon microscopy based on resonant nonlinear optics of colloidal quantum dots. Physica Status Solidi. C 6(4), pp. 916-919. (10.1002/pssc.200880667)
Cesari, V., Langbein, W. and Borri, P. 2009. The role of p-doping in the gain dynamics of InAs/GaAs quantum dots at low temperature. Applied Physics Letters 94(4), article number: 41110. (10.1063/1.3075855)
Borri, P., Cesari, V., Rossetti, M., Fiore, A. and Langbein, W. W. 2009. Gain dynamics in p-doped InGaAs quantum dot amplifiers from room to cryogenic temperatures. Presented at: Physics and simulation of optoelectronic devices XVII, San Jose, CA, USA, 26-29 January 2009 Presented at Osiński, M. et al. eds.Physics and simulation of optoelectronic devices XVII: 26 January 2009, San Jose, CA, USA. Proceedings of SPIE Vol. 7211. Bellingham, WA: SPIE - International Society for Optical Engineering pp. 72110Z., (10.1117/12.808206)
Masia, F., Langbein, W. W. and Borri, P. 2009. Multi-photon microscopy based on resonant four-wave mixing of colloidal quantum dots. Presented at: Colloidal quantum dots for biomedical applications IV, San Jose, CA, USA, 24 January 2009 Presented at Osinski, M., Jovin, T. M. and Yamamoto, K. eds.Colloidal Quantum Dots for Biomedical Applications IV: Saturday 24 January 2009, San Jose, CA, USA. Proceedings of SPIE Vol. 7189-3. Bellingham, WA: SPIE - International Society for Optical Engineering pp. 71890Z., (10.1117/12.807968)
Rocha-Mendoza, I., Langbein, W. W. and Borri, P. 2009. CARS microscopy using linearly chirped ultrafast laser pulses. Presented at: Multiphoton microscopy in the biomedical sciences IX, San Jose, CA, USA, 25-27 January 2009 Presented at Periasamy, A. and So, P. T. C. eds.Proceedings of the Multiphoton Microscopy in the Biomedical Sciences IX conference, San Jose, USA, 25 January 2009, Vol. 7183. Proceedings of the SPIE Bellingham, WA: SPIE pp. 71830T., (10.1117/12.809411)
Langbein, W. W., Chantada, L., Nikolaev, N. I., Ivanov, A. and Borri, P. 2009. Modelling the response of whispering-gallery-mode optical resonators for biosensing applications. Presented at: Nanoscale imaging, sensing, and actuation for biomedical applications 6, San Jose, CA, USA, 27-28 January 2009 Presented at Cartwright, A. N. and Nicolau, D. V. eds.Proceedings of the Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VI conference, San Jose, USA, 27 January 2009. Proceedings of SPIE Vol. 7188. Bellingham, WA: SPIE pp. 71880G., (10.1117/12.808790)
Borri, P., Lutti, J. and Langbein, W. 2009. Whispering-gallery modes in dielectric microspheres for biosensing applications. Presented at: nternational Conference on Transparent Optical Networks, Sao Miguel Azores, Portugal, 28 June-2 July 2009ICTON 2009 11th International Conference on Transparent Optical Networks: Ponta Delgada University, S. Miguel, Azores, Portugal, 28th June-2nd July 2009. New York: Institute of Electrical and Electronics Engineers pp. 1-3., (10.1109/ICTON.2009.5185193)
Langbein, W. W., Chantada, L., Nikolaev, N. I., Ivanov, A. and Borri, P. 2009. Modelling the response of whispering-gallery-mode optical resonators for biosensing applications. Presented at: International Conference on Transparent Optical Networks (ICTON), São Miguel, Azores, Portugal, 28 June - 2 July 2009Proceedings of the11th International Conference on Transparent Optical Networks (ICTON '09), Azores, 28 June - 2 July 2009. Piscataway, NJ: Institute of Electrical and Electronics Engineers pp. 1., (10.1109/ICTON.2009.5185173)
Langbein, W. W., Rocha-Mendoza, I. and Borri, P. 2009. Coherent anti-Stokes Raman micro-spectroscopy using spectral focusing: theory and experiment. Journal of Raman Spectroscopy 40(7), pp. 800-808. (10.1002/jrs.2264)
Rocha-Mendoza, I., Langbein, W. W., Watson, P. D. and Borri, P. 2009. Differential coherent anti-Stokes Raman scattering microscopy with linearly chirped femtosecond laser pulses. Optics Letters 34(15), pp. 2258-2260. (10.1364/OL.34.002258)
Sun, Y., Masia, F., Langbein, W. W. and Borri, P. 2009. Fabrication and optical properties of thin silica-coated CdSe/ZnS quantum dots. Physica Status Solidi a Applications and Materials Science 206(12), pp. 2822-2825. (10.1002/pssa.200925250)
Cesari, V., Borri, P., Rossetti, M., Fiore, A. and Langbein, W. W. 2009. Refractive index dynamics and linewidth enhancement factor in p-Doped InAs-GaAs quantum-dot amplifiers. IEEE Journal of Quantum Electronics 45(6), pp. 579-585. (10.1109/JQE.2009.2013110)
Langbein, W. W., Rocha-Mendoza, I. and Borri, P. 2009. Single source coherent anti-Stokes Raman microspectroscopy using spectral focusing. Applied Physics Letters 95(8), article number: 81109. (10.1063/1.3216073)
Lumb, M. P. et al. 2009. Ultrafast absorption recovery dynamics of 1300 nm quantum dot saturable absorber mirrors. Applied Physics Letters 95(4) (10.1063/1.3186081)
Kasprzak, J. and Langbein, W. W. 2009. Four-wave mixing from individual excitons: Intensity dependence and imaging. physica status solidi (b) 246(4), pp. 820-823. (10.1002/pssb.200880583)
Biancalana, F., Mouchliadis, L., Creatore, C., Osborne, S. and Langbein, W. W. 2009. Microcavity polaritonlike dispersion doublet in resonant Bragg gratings. Physical Review B: Condensed Matter and Materials Physics 80(12), article number: 121306(R). (10.1103/PhysRevB.80.121306)
Kasprzak, J. et al. 2009. Coherent dynamics of one and two-photon states in a strongly coupled single quantum dot-cavity system. Presented at: Conference on Lasers and Electro-Optics, Baltimore, MD, USA, 2-4 June 2009Proceedings of the Lasers and Electro-Optics Conference and the Quantum Electronics and Laser Science Conference (CLEO/QELS 2009), Baltimore, USA, 2-4 June 2009. Piscataway, NJ: Institute of Electrical and Electronics Engineers pp. 1-2.

2008

Rocha-Mendoza, I., Langbein, W. W. and Borri, P. 2008. Coherent anti-Stokes Raman microspectroscopy using spectral focusing with glass dispersion. Applied Physics Letters 93(20), article number: 201103. (10.1063/1.3028346)
Lutti, J., Langbein, W. W. and Borri, P. 2008. A monolithic optical sensor based on whispering-gallery modes in polystyrene microspheres. Applied Physics Letters 93(15), article number: 151103. (10.1063/1.2998652)
Masia, F., Langbein, W. W. and Borri, P. 2008. Multiphoton microscopy based on four-wave mixing of colloidal quantum dots. Applied Physics Letters 93(2), article number: 21114. (10.1063/1.2959737)
Kasprzak, J. and Langbein, W. W. 2008. Vectorial four-wave mixing field dynamics from individual excitonic transitions. Physical Review. B, Condensed Matter and Materials Physics 78(4), article number: 041103(R). (10.1103/PhysRevB.78.041103)
Chantada, L., Nikolaev, N. I., Ivanov, A., Borri, P. and Langbein, W. W. 2008. Optical resonances in microcylinders: Response to perturbations for biosensing. Journal of the Optical Society of America B 25(8), pp. 1312-1321. (10.1364/JOSAB.25.001312)
Borri, P. and Langbein, W. W. 2008. Transient four-wave mixing of excitons in quantum dots from ensembles and individuals. In: Benson, O. and Henneberger, F. eds. Semiconductor Quantum Bits. Singapore: Pan Stanford Publishing, pp. 269-319.
Kasprzak, J., Patton, B. R. and Langbein, W. W. 2008. Ultrafast nonlinear spectroscopy of individual quantum dots: imaging and coherent coupling. Presented at: Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, San Jose, CA, USA, 20-23 January 2008 Presented at Song, J. -. et al. eds.Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII conference, 20-23 January 2008, San Jose, California, USA. Proceedings of the SPIE Vol. 6892. Bellingham, WA: SPIE pp. 68920Z., (10.1117/12.767661)

2007

Lutti, J., Langbein, W. W. and Borri, P. 2007. High Q optical resonances of polystyrene microspheres in water controlled by optical tweezers. Applied Physics Letters 91(14), article number: 141116. (10.1063/1.2795332)
Borri, P. and Langbein, W. W. 2007. Four-wave mixing dynamics of excitons in InGaAs self-assembled quantum dots. Journal of Physics: Condensed Matter 19(29), article number: 295201. (10.1088/0953-8984/19/29/295201)
Langbein, W. W. and Patton, B. 2007. Transient coherent nonlinear spectroscopy of single quantum dots. Journal of Physics: Condensed Matter 19(29), article number: 295203. (10.1088/0953-8984/19/29/295203)
Cesari, V. et al. 2007. Ultrafast gain dynamics in 1.3um InAs/GaAs quantum-dot optical amplifiers: The effect of p doping. Applied Physics Letters 90(20), article number: 201103. (10.1063/1.2739079)
Langbein, W. W., Shelykh, I., Solnyshkov, D., Malpuech, G., Rubo, Y. and Kavokin, A. 2007. Polarization beats in ballistic propagation of exciton-polaritons in microcavities. Physical Review B: Condensed Matter and Materials Physics 75(7), article number: 75323. (10.1103/PhysRevB.75.075323)
Cesari, V. et al. 2007. Ultrafast carrier dynamics in p-doped InAs/GaAs quantum-dot amplifiers. IET Optoelectronics 1(6), pp. 298-302. (10.1049/iet-opt:20070040)
Langbein, W. W. 2007. Quantum complementarity of microcavity polariton. Presented at: Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV, San Jose, CA, 20 January 2007 Presented at Tsen, K. et al. eds.Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV (Proceedings of SPIE). Proceedings of SPIE Vol. 6471. Bellingham WA: The International Society for Optical Engineering pp. 647109., (10.1117/12.697280)

2006

Borri, P., Langbein, W. W., Muljarov, E. A. and Zimmermann, R. 2006. Dephasing of excited-state excitons in InGaAs quantum dots. physica status solidi (b) 243(15), pp. 3890-3894. (10.1002/pssb.200671516)
Langbein, W. W. 2006. Quantum Dots: All spins under control. Nature Materials 5(7), pp. 519-520. (10.1038/nmat1680)
Patton, B., Langbein, W. W., Woggon, U., Maingault, L. and Mariette, H. 2006. Time- and spectrally-resolved four-wave mixing in single CdTe/ZnTe quantum dots. Physical Review B: Condensed Matter and Materials Physics 73(23), article number: 235354. (10.1103/PhysRevB.73.235354)
Borri, P., Schneider, S., Langbein, W. W. and Bimberg, D. 2006. Ultrafast carrier dynamics in InGaAs quantum dot materials and devices. Journal of Optics A: Pure and Applied Optics 8(4), pp. S33. (10.1088/1464-4258/8/4/S03)
Langbein, W. W. and Patton, B. 2006. Heterodyne Spectral Interferometry for Multidimensional Nonlinear Spectroscopy of Individual Quantum Systems. Optics Letters 31, pp. 1151-1153. (10.1364/OL.31.001151)
Le Thomas, N., Woggon, U., Langbein, W. W. and Artemyev, M. V. 2006. Effect of a dielectric substrate on whispering-gallery-mode sensors. Journal of the Optical Society of America B 23(11), pp. 2361-2365. (10.1364/JOSAB.23.002361)
Langbein, W. W. and Patton, B. 2006. Heterodyne spectral interferometry for multidimensional nonlinear spectroscopy of individual quantum systems. Optics Letters 31(8), pp. 1151-1153. (10.1364/OL.31.001151)
Savona, V. and Langbein, W. W. 2006. Realistic heterointerface model for excitonic states in growth-interrupted GaAs quantum wells. Physical Review B: Condensed Matter and Materials Physics 74(7), article number: 75311. (10.1103/PhysRevB.74.075311)

2005

Langbein, W. W., Patton, B. and Woggon, U. 2005. Coherent Control and Polarization Readout of Individual Excitonic States. Physical Review Letters (PRL) 95, article number: 266401. (10.1103/PhysRevLett.95.266401)
Schneider, S., Borri, P., Langbein, W. W., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2005. Excited-state gain dynamics in InGaAs quantum-dot amplifiers. IEEE Photonics Technology Letters 17(10), pp. 2014-2016. (10.1109/LPT.2005.856446)
Langbein, W. W. 2005. Polariton correlation in microcavities produced by parametric scattering. physica status solidi (b) 242(11), pp. 2260-2270. (10.1002/pssb.200560967)
Langbein, W. W. and Patton, B. 2005. Microscopic Measurement of Photon Echo Formation in Groups of Individual Excitonic Transitions. Physical Review Letters (PRL) 95, article number: 17403. (10.1103/PhysRevLett.95.017403)
Langbein, W. W., Savasta, S., Di Stefano, O. and Savona, V. 2005. Quantum Complementarity of Microcavity Polaritons. Physical Review Letters (PRL) 94, article number: 246401. (10.1103/PhysRevLett.94.246401)
Axt, V. M., Kuhn, T., Vagov, A., Borri, P., Langbein, W. and Woggon, U. 2005. Observation of an unusual temperature dependence of the initial decoherence time in quantum dots. Physica Status Solidi C: Current Topics in Solid State Physics 2(8), pp. 3167-3170. (10.1002/pssc.200460779)
Wagner, H., Tripathy, S., Tranitz, H. and Langbein, W. W. 2005. Phase Coherent Photorefractivity in ZnSe Single Quantum Wells. Physical Review Letters 94(14), article number: 147402. (10.1103/PhysRevLett.94.147402)
Borri, P., Langbein, W. W., Woggon, U., Stavarache, V., Reuter, D. and Wieck, A. D. 2005. Exciton dephasing via phonon interactions in InAs quantum dots: dependence on quantum confinement. Physical Review B: Condensed Matter and Materials Physics 71(11), article number: 115328. (10.1103/PhysRevB.71.115328)
Langbein, W. W. et al. 2005. Coherent dynamics in InGaAs quantum dots and quantum dot molecules. Physica E: Low-dimensional Systems and Nanostructures 26(1-4), pp. 400-407. (10.1016/j.physe.2004.08.004)
Schneider, S., Woggon, U., Borri, P., Langbein, W. W., Ouyang, D., Sellin, R. L. and Bimberg, D. 2005. Ultrafast gain recovery dynamics of the excited state in InGaAs quantum dot amplifiers. Presented at: Conference on Lasers & Electro-Optics (CLEO), Baltimore, MD, 22-27 May 20052005 Conference on Lasers & Electro-Optics (CLEO) : May 22-27, 2005, Baltimore, MD, Vol. 3. Washington, DC: IEEE pp. 1674-1676., (10.1109/CLEO.2005.202237)
Patton, B., Langbein, W. W. and Woggon, U. 2005. Transient four-wave mixing of single exciton states: Exciton-exciton interaction and Rabi oscillations. Presented at: American Institute of Physics 27th International Conference on the Physics of Semiconductors, Flagstaff, AZ, 26-30 July 2004 Presented at Menéndez, J. and Van de Walle, C. G. eds.Physics of semiconductors : 27th International Conference on the Physics of Semiconductors : ICPS-27 : Flagstaff, Arizona, 26-30 July, 2004, Vol. 772. AIP conference proceedings Melville, N.Y.: American Institute of Physics pp. 1232., (10.1063/1.1994558)

2004

Ortner, G. et al. 2004. Exciton states in self-assembled InAs/GaAs quantum dot molecules. Physica E: Low-dimensional Systems and Nanostructures 25(2-3), pp. 249-260. (10.1016/j.physe.2004.06.024)
Vagov, A., Axt, V., Kuhn, T., Langbein, W. W., Borri, P. and Woggon, U. 2004. Nonmonotonous temperature dependence of the initial decoherence in quantum dots. Physical Review B: Condensed Matter and Materials Physics 70(20), article number: 201305(R). (10.1103/PhysRevB.70.201305)
Langbein, W. W. 2004. Spontaneous parametric scattering of microcavity polaritons in momentum space. Physical Review B: Condensed Matter and Materials Physics 70(20), article number: 205301. (10.1103/PhysRevB.70.205301)
Schneider, S., Borri, P., Langbein, W. W., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2004. Linewidth enhancement factor in InGaAs quantum-dot amplifiers. IEEE Journal of Quantum Electronics 40(10), pp. 1423-1429. (10.1109/JQE.2004.834779)
Langbein, W. W., Borri, P., Woggon, U., Stavarache, V., Reuter, D. and Wieck, A. 2004. Radiatively limited dephasing in InAs quantum dots. Physical Review B: Condensed Matter and Materials Physics 70(3), article number: 33301. (10.1103/PhysRevB.70.033301)
Langbein, W. W., Borri, P. and Woggon, U. 2004. Control of fine-structure splitting and biexciton binding in In_{x}Ga_{1-x}As quantum dots by annealing. Physical Review B: Condensed Matter and Materials Physics 69(16), article number: 161301(R). (10.1103/PhysRevB.69.161301)
Bayer, M. et al. 2004. Quantum dots: building blocks of quantum devices?. In: Kramer, B. ed. Advances in Solid State Physics., Vol. 44. Berlin: Springer, pp. 191-211., (10.1007/978-3-540-39970-4_16)
Savona, V., Langbein, W. W. and Kocherscheidt, G. 2004. Determining the structure of semiconductor heterointerfaces by excitonic optical spectra. Physica Status Solidi C: Current Topics in Solid State Physics 1(3), pp. 501-505. (10.1002/pssc.200304025)
Mannarini, G., Grosse, F., Zimmermann, R., Kassbohm, S. and Langbein, W. W. 2004. Moving speckles in the Rayleigh scattering of excitons in potential gradients. Physical Review B: Condensed Matter and Materials Physics 69(8), article number: 85326. (10.1103/PhysRevB.69.085326)
Ivanova, A., Borri, P., Langbein, W. W. and Woggon, U. 2004. Radiative corrections to the excitonic molecule state in GaAs microcavities. Physical Review B: Condensed Matter and Materials Physics 69(7), article number: 75312. (10.1103/PhysRevB.69.075312)
Mannarini, G., Langbein, W. W. and Zimmermann, R. 2004. Sloped and bow-tie speckles from a warped energetic landscape. Physica Status Solidi C: Current Topics in Solid State Physics 1(3), pp. 489-492. (10.1002/pssc.200304014)
Borri, P. et al. 2004. Dephasing processes in InGaAs quantum dots and quantum-dot molecules. Presented at: Quantum Dots, Nanoparticles, and Nanoclusters, San Jose, CA, 26-27 January 2004 Presented at Huffaker, D. L. and Bhattacharya, P. eds.Quantum Dots, Nanoparticles, and Nanoclusters: 26-27 January, 2004, San Jose, California, USA. SPIE proceedings series Vol. 5361. Bellingham, WA: SPIE--the International Society for Optical Engineering pp. 96-107., (10.1117/12.531544)
Langbein, W. W. 2004. Energy and momentum broadening of planar microcavity polaritons measured by resonant light scattering. Journal of Physics: Condensed Matter 16(35), pp. S3645-S3652. (10.1088/0953-8984/16/35/006)

2003

Borri, P. et al. 2003. Exciton dephasing in quantum dot molecules. Physical Review Letters (PRL) 91(26), article number: 267401. (10.1103/PhysRevLett.91.267401)
Borri, P., Langbein, W. W., Woggon, U., Esser, A., Jensen, J. R. and Hvam, J. M. 2003. Biexcitons in semiconductor microcavities. Semiconductor Science and Technology 18(10), pp. S351-S360. (10.1088/0268-1242/18/10/309)
Schneider, S. et al. 2003. Self-induced transparency in InGaAs quantum-dot waveguides. Applied Physics Letters 83(18), pp. 3668-3670. (10.1063/1.1624492)
Patton, B., Langbein, W. W. and Woggon, U. 2003. Trion, biexciton, and exciton dynamics in single self-assembled CdSe quantum dots. Physical Review B Condensed Matter and Materials Physics 68(12), article number: 125316. (10.1103/PhysRevB.68.125316)
Mannarini, G., Zimmermann, R., Kocherscheidt, G. and Langbein, W. W. 2003. Density-matrix description of frequency-resolved secondary emission from quantum wells. physica status solidi (b) 238(3), pp. 494-497. (10.1002/pssb.200303168)
Kocherscheidt, G., Langbein, W. W. and Savona, V. 2003. Level-statistics in the resonant Rayleigh scattering dynamics of monolayer-split excitons. physica status solidi (b) 238(3), pp. 486-493. (10.1002/pssb.200303167)
Kocherscheidt, G., Langbein, W. W., Woggon, U., Savona, V., Zimmermann, R., Reuter, D. and Wieck, A. 2003. Resonant Rayleigh scattering dynamics of excitons in single quantum wells. Physical Review B 68(8), article number: 85207. (10.1103/PhysRevB.68.085207)
Borri, P., Langbein, W. W., Schneider, S., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2003. Dephasing of biexcitons in InGaAs quantum dots. physica status solidi (b) 238(3), pp. 593-600. (10.1002/pssb.200303177)
Leosson, K., Birkedal, D., Magnusdottir, I., Langbein, W. W. and Hvam, J. M. 2003. Homogeneous linewidth of self-assembled III-V quantum dots observed in single-dot photoluminescence. Physica E: Low-dimensional Systems and Nanostructures 17, pp. 1-6. (10.1016/S1386-9477(02)00698-7)
Borri, P., Langbein, W. W., Schneider, S., Woggon, U., Sellin, R., Ouyang, D. N. and Bimberg, D. 2003. Temperature dependence homogeneous broadening and gain recovery dynamics in InGaAs quantum dots. Presented at: 10th International Symposium on Nanostructures: Physics and Technology, St. Petersburg, Russia, 17-21 June 2002 Presented at Alferov, Z. I. and Esaki, R. eds.10th International Symposium on Nanostructures: Physics and Technology. (Proceedings of SPIE). SPIE Proceedings Series Vol. 5023. Bellingham, WA: SPIE, pp. 334-339., (10.1117/12.514297)
Borri, P. and Langbein, W. W. 2003. Dephasing processes and carrier dynamics in (In,Ga)As quantum dots. In: Michler, P. ed. Single Quantum Dots: Fundamentals, Applications, and New Concepts. Topics in Applied Physics Vol. 90. Berlin: Springer, pp. 237-268., (10.1007/978-3-540-39180-7_6)

2002

Langbein, W. W. 2002. Speckle analysis of resonant secondary emission. physica status solidi (b) 234(1), pp. 84-95. (10.1002/1521-3951(200211)234:1<84::AID-PSSB84>3.0.CO;2-Y)
Borri, P., Langbein, W. W., Schneider, S., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2002. Relaxation and dephasing of multiexcitons in semiconductor quantum dots. Physical Review Letters (PRL) 89(18), article number: 187401. (10.1103/PhysRevLett.89.187401)
Kocherscheidt, G., Langbein, W. W., Mannarini, G. and Zimmermann, R. 2002. Spectral speckle analysis of resonant secondary emission from solids. Physical Review B 66(16), article number: 161314(R). (10.1103/PhysRevB.66.161314)
Borri, P., Langbein, W. W., Schneider, S., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2002. Exciton relaxation and dephasing in quantum-dot amplifiers from room to cryogenic temperature. IEEE Journal of Selected Topics in Quantum Electronics 8(5), pp. 984-991. (10.1109/JSTQE.2002.804250)
Borri, P., Langbein, W., Schneider, S., Woggon, U., Sellin, R., Ouyang, D. and Bimberg, D. 2002. Rabi oscillations in the excitonic ground-state transition of InGaAs quantum dots. Physical Review B 66(8), article number: 081306(R). (10.1103/PhysRevB.66.081306)
Borri, P., Langbein, W. W., Woggon, U., Jensen, J. R. and Hvam, J. M. 2002. Coherent dynamics of biexcitons in a semiconductor microcavity. physica status solidi (a) 190(2), pp. 383 -387. (10.1002/1521-396X(200204)190:2<383::AID-PSSA383>3.0.CO;2-G)
Borri, P., Langbein, W. W., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2002. Temperature-dependent time-resolved four-wave mixing in InGaAs quantum dots. physica status solidi (a) 190(2), pp. 517-521. (10.1002/1521-396X(200204)190:2<517::AID-PSSA517>3.0.CO;2-K)
Langbein, W. W. and Hvam, J. M. 2002. Directional scattering dynamics of microcavity polaritons. physica status solidi (a) 190(2), pp. 327-332. (10.1002/1521-396X(200204)190:2<327::AID-PSSA327>3.0.CO;2-O)
Langbein, W. W., Mann, C., Woggon, U., Klude, M. and Hommel, D. 2002. Radiative coupling of excitons in ZnSe double quantum wells. physica status solidi (a) 190(3), pp. 861-866. (10.1002/1521-396X(200204)190:3<861::AID-PSSA861>3.0.CO;2-B)
Langbein, W. W. and Hvam, J. 2002. Elastic Scattering Dynamics of Cavity Polaritons: Evidence for Time-Energy Uncertainty and Polariton Localization. Physical Review Letters 88(4), article number: 47401. (10.1103/PhysRevLett.88.047401)
Artemyev, M., Woggon, U. and Langbein, W. W. 2002. Quantum dot emission confined by a spherical photonic dot. physica status solidi (b) 229(1), pp. 423-426. (10.1002/1521-3951(200201)229:1<423::AID-PSSB423>3.0.CO;2-#)
Borri, P., Langbein, W. W., Schneider, S., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2002. Coherent light-matter interaction in InGaAs quantum dots: Dephasing time and optical Rabi oscillations. physica status solidi (b) 233(3), pp. 391-400. (10.1002/1521-3951(200210)233:3<391::AID-PSSB391>3.0.CO;2-J)
Alferov, Z. I., Kocherscheidt, G., Langbein, W. W., Zimmermann, R. and Esaki, L. 2002. Spectral speckle analysis: a new method to measure coherence and dephasing in semiconductor nanostructures. Presented at: 10th International Symposium on Nanostructures: Physics and Technology, St. Petersburg, Russia, 17-21 June 2002 Presented at Alferov, Z. I. and Esaki, L. eds.10th International Symposium on Nanostructures: Physics and Technology (Proceedings of Spie), Vol. 197. Vol. 5023. Bellingham, WA: The International Society for Optical Engineering, (10.1117/12.513755)
Wagner, H. P., Tranitz, H., Langbein, W. W., Hvam, J. M., Bacher, G. and Forchel, A. 2002. Biexciton binding energy in ZnSe quantum wells and quantum wires. physica status solidi (b) 231(1), pp. 11-18. (10.1002/1521-3951(200205)231:1<11::AID-PSSB11>3.0.CO;2-V)
Langbein, W. W. and Hvam, J. M. 2002. Biexcitonic bound and continuum states of homogeneously and inhomogeneously broadened exciton resonances. physica status solidi (a) 190(1), pp. 167-174. (10.1002/1521-396X(200203)190:1<167::AID-PSSA167>3.0.CO;2-I)
Langbein, W. W., Runge, E., Savona, V. and Zimmermann, R. 2002. Enhanced resonant backscattering of excitons in disordered quantum wells. Physical Review Letters 89(15), pp. 157401-1. (10.1103/PhysRevLett.89.157401)

2001

Mann, C., Langbein, W. W., Woggon, U. and Ivanov, A. 2001. Coherent dynamics of bipolaritons in bulk CdS. Physical Review B 64(23), article number: 235206. (10.1103/PhysRevB.64.235206)
Borri, P. et al. 2001. Ultrafast carrier dynamics and dephasing in InAs quantum-dot amplifiers emitting near 1.3-μm-wavelength at room temperature. Applied Physics Letters 79(16), pp. 2633-2635. (10.1063/1.1411986)
Kavokin, A., Malpuech, G. and Langbein, W. W. 2001. Theory of propagation and scattering of exciton-polaritons in quantum wells. Solid State Communications 120(7-8), pp. 259-263. (10.1016/S0038-1098(01)00396-9)
Borri, P., Langbein, W. W., Schneider, S., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2001. Ultralong Dephasing Time in InGaAs Quantum Dots. Physical Review Letters (PRL) 87(15), article number: 157401. (10.1103/PhysRevLett.87.157401)
Fiore, A. et al. 2001. Structural and electrooptical characteristics of quantum dots emitting at 1.3 μm on gallium arsenide. IEEE Journal of Quantum Electronics 37(8), pp. 1050-1058. (10.1109/3.937394)
Jensen, J. R., Hvam, J. M. and Langbein, W. W. 2001. Enhanced confinement energy in strained asymmetric T-shaped quantum wires. Journal of Crystal Growth 227-22, pp. 966-969. (10.1016/S0022-0248(01)00960-5)
Borri, P., Langbein, W. W., Hvam, J. M., Heinrichsdorff, F., Mao, M. -. and Bimberg, D. 2001. Coherent versus incoherent dynamics in InAs quantum-dot active wave guides. Journal of Applied Physics 89(11), pp. 6542-6544. (10.1063/1.1367410)
Artemyev, M. V., Woggon, U., Wannemacher, R., Jaschinski, H. and Langbein, W. W. 2001. Light trapped in a photonic dot: Microspheres act as a cavity for quantum dot emission. Nano Letters 1(6), pp. 309-314. (10.1021/nl015545l)
Borri, P., Langbein, W. W., Hvam, J. M., Heinrichsdorff, F., Mao, M. and Bimberg, D. 2001. Spectral hole-burning and carrier-heating dynamics in quantum-dot amplifiers: comparison with bulk amplifiers. Physica Status Solidi (b) 224(2), pp. 419-423. (10.1002/1521-3951(200103)224:2<419::AID-PSSB419>3.0.CO;2-J)
Hild, K., Miller, D., Langbein, W. W., Woggon, U., Hetterich, M. and Klingshirn, C. 2001. Enhancement of binding energies and polarized emission of 0D biexcitons. physica status solidi (b) 224(2), pp. 379-384. (10.1002/1521-3951(200103)224:2<379::AID-PSSB379>3.0.CO;2-#)
Borri, P., Langbein, W. W., Woggon, U., Jensen, J. R. and Hvam, J. M. 2001. Biexcitons or bipolaritons in a semiconductor microcavity?. Presented at: 25th International Conference on the Physics of Semiconductors, Osaka, Japan, 17-22 September 2000 Presented at Miura, N. and Ando, T. eds.Proceedings of the 25th International Conference on the Physics of Semiconductors Part I. Springer Proceedings in Physics Vol. 87. Berlin: Springer pp. 681-682.
Zimmermann, R., Langbein, W. W., Runge, E. and Hvam, J. M. 2001. Localized excitons in quantum wells show spin relaxation without coherence loss. Physica E: Low-dimensional Systems and Nanostructures 10(1-3), pp. 40-44. (10.1016/S1386-9477(01)00050-9)
Malpuech, G., Kavokin, A., Langbein, W. W. and Hvam, J. M. 2001. Resonant Rayleigh scattering of exciton-polaritons in multiple quantum well. Presented at: 25th International Conference on the Physics of Semiconductors, Osaka, Japan, 17–22 September 2000 Presented at Miura, N. and Ando, T. eds.Proceedings of the 25th International Conference on the Physics of Semiconductors Part I. Springer Proceedings in Physics Vol. 87. Berlin: Springer-Verlag pp. 521-522.
Zimmermann, R., Langbein, W. W., Runge, E. and Hvam, J. M. 2001. Speckle-correlation spectroscopy on localized spin-split exciton states in quantum wells. Presented at: 25th International Conference on the Physics of Semiconductors, Osaka, Japan, 17–22 September 2000 Presented at Miura, N. and Ando, T. eds.Proceedings of the 25th International Conference on the Physics of Semiconductors Part I. Springer Proceedings in Physics Vol. 87. Berlin: Springer-Verlag pp. 523-524.
Langbein, W. W., Meier, T., Koch, S. W. and Hvam, J. M. 2001. Spectral signatures of x(5) processes in four-wave mixing of homogeneously broadened excitons. Journal of the Optical Society of America B 18(9), pp. 1318-1325. (10.1364/JOSAB.18.001318)
Erland, J., Mizeikis, V., Langbein, W. W., Jensen, J. and Hvam, J. 2001. Stimulated secondary emission from semiconductor microcavities. Physical Review Letters 86(25), pp. 5791-5794. (10.1103/PhysRevLett.86.5791)

2000

Romstad, F., Borri, P., Langbein, W. W., Mork, J. and Hvam, J. M. 2000. Measurement of pulse amplitude and phase distortion in a semiconductor optical amplifier: from pulse compression to breakup. IEEE Photonics Technology Letters 12(12), pp. 1674-1676. (10.1109/68.896345)
Borri, P., Jensen, J. R., Langbein, W. W. and Hvam, J. M. 2000. Temperature dependence of the polariton linewidth in a GaAs quantum well microcavity. Physica Status Solidi (b) 221(1), pp. 143-146. (10.1002/1521-3951(200009)221:1<143::AID-PSSB143>3.0.CO;2-5)
Borri, P., Langbein, W. W., Woggon, U., Jensen, J. R. and Hvam, J. M. 2000. Biexcitons or bipolaritons in a semiconductor microcavity. Physical Review B 62(12), pp. R7763-R7766. (10.1103/PhysRevB.62.R7763)
Woggon, U., Langbein, W. W., Mann, C., Gindele, F. and Ivanov, A. 2000. Probing slow polariton propagation by bipolaritons. physica status solidi (b) 221(1), pp. 467-472. (10.1002/1521-3951(200009)221:1<467::AID-PSSB467>3.0.CO;2-6)
Erland, J., Mizeikis, V., Langbein, W. W., Jensen, J. R., Mortensen, N. A. and Hvam, J. M. 2000. Seeding of polariton stimulation in a homogeneously broadened microcavity. physica status solidi (b) 221(1), pp. 115-120. (10.1002/1521-3951(200009)221:1<115::AID-PSSB115>3.0.CO;2-9)
Borri, P., Langbein, W. W., Hvam, J. M., Heinrichsdorff, F., Mao, M. and Bimberg, D. 2000. Ultrafast gain dynamics in InAs-InGaAs quantum-dot amplifiers. IEEE Photonics Technology Letters 12(6), pp. 594-596. (10.1109/68.849054)
Fiore, A. et al. 2000. Time-resolved optical characterization of InAs/InGaAs quantum dots emitting at 1.3 μm. Applied Physics Letters 76(23), pp. 3430-3432. (10.1063/1.126668)
Wagner, H. P., Tranitz, H. -., Preis, H., Langbein, W. W. and Hvam, J. 2000. Dephasing and interaction of excitons in CdSe/ZnSe islands. Journal of Crystal Growth 214(21), pp. 747-751. (10.1016/S0022-0248(00)00192-5)
Borri, P., Jensen, J., Langbein, W. W. and Hvam, J. 2000. Direct evidence of reduced dynamic scattering in the lower polariton of a semiconductor microcavity. Physical Review B 61(20), pp. R13377-R13380. (10.1103/PhysRevB.61.R13377)
Jensen, J. R., Borri, P., Langbein, W. W. and Hvam, J. M. 2000. Ultranarrow polaritons in a semiconductor microcavity. Applied Physics Letters 76(22), pp. 3262-3264. (10.1063/1.126601)
Borri, P., Langbein, W. W., Mork, J., Hvam, J. M., Heinrichsdorff, F., Mao, M. and Bimberg, D. 2000. Room-temperature dephasing in InAs quantum dots. Physica Status Solidi (a) 178(1), pp. 337-340. (10.1002/1521-396X(200003)178:1<337::AID-PSSA337>3.0.CO;2-M)
Borri, P., Langbein, W. W., Hvam, J. M., Heinrichsdorff, F., Mao, M. and Bimberg, D. 2000. Time-resolved four-wave mixing in InAs/InGaAs quantum-dot amplifiers under electrical injection. Applied Physics Letters 76(11), pp. 1380-1382. (10.1063/1.126038)
Borri, P., Langbein, W. W., Woggon, U., Jensen, J. R. and Hvam, J. M. 2000. Microcavity polariton linewidths in the weak-disorder regime. Physical Review B 63(3), article number: 35307. (10.1103/PhysRevB.63.035307)
Borri, P., Romstad, F., Langbein, W. W., Kelly, A., Mork, J. and Hvam, J. M. 2000. Separation of coherent and incoherent nonlinearities in a heterodyne pump-probe experiment. Optics Express 7(3), pp. 107-112. (10.1364/OE.7.000107)
Borri, P., Langbein, W. W., Hvam, J. M., Heinrichsdorff, F., Mao, M. and Bimberg, D. 2000. Spectral hole-burning and carrier-heating dynamics in InGaAs quantum-dot amplifiers. IEEE Journal of Selected Topics in Quantum Electronics 6(3), pp. 544-551. (10.1109/2944.865110)
Borri, P., Langbein, W. W., Hvam, J. M. and Bimberg, D. 2000. Coherent versus incoherent dynamics in InAs quantum dots: the role of elastic dephasing. Presented at: 25th International Conference on the Physics of Semiconductors, Osaka, Japan, 17–22 September 2000 Presented at Miura, N. and Ando, T. eds.Proceedings of the 25th International Conference on the Physics of Semiconductors: Osaka, Japan, September 17-22, 2000, Vol. 2. Springer Proceedings in Physics Vol. 87. Berlin: Springer pp. 1221-1222.
Esser, A., Runge, E., Zimmermann, R. and Langbein, W. W. 2000. Electron and hole trions in wide GaAs quantum wells. physica status solidi (b) 221(1), pp. 281-286. (10.1002/1521-3951(200009)221:1<281::AID-PSSB281>3.0.CO;2-U)
Leosson, K., Jensen, J. R., Langbein, W. W. and Hvam, J. M. 2000. Exciton localization and interface roughness in growth-interrupted GaAs/AlAs quantum wells. Physical Review B Condensed Matter and Materials Physics 61(15), pp. 10 332-10 329.
Woggon, U., Hild, K., Gindele, F., Langbein, W. W., Hetterich, M., Grün, M. and Klingshirn, C. 2000. Huge binding energy of localized biexcitons in CdS/ZnS quantum structures. Physical Review B 61(19), pp. 12632-12635. (10.1103/PhysRevB.61.12632)
Jensen, J. R., Hvam, J. M. and Langbein, W. W. 2000. InAlGaAs/AlGaAs quantum wells: line widths, transition energies and segregation. Microelectronic Engineering 51-52, pp. 257-264. (10.1016/S0167-9317(99)00489-X)
Langbein, W. W., Leosson, K., Jensen, J., Hvam, J. and Zimmermann, R. 2000. Instantaneous Rayleigh scattering from excitons localized in monolayer islands. Physical Review B 61(16), pp. R10555-R10558. (10.1103/PhysRevB.61.R10555)
Leosson, K., Jensen, J. R., Hvam, J. M. and Langbein, W. W. 2000. Linewidth statistics of single InGaAs quantum dot photoluminescence lines. physica status solidi (b) 221(1), pp. 49-53. (10.1002/1521-3951(200009)221:1<49::AID-PSSB49>3.0.CO;2-F)
Langbein, W. W. and Hvam, J. M. 2000. Measuring excitonic coherence in nanostructures: Time-resolved speckle analysis versus four-wave mixing. physica status solidi (a) 178(1), pp. 13-20. (10.1002/1521-396X(200003)178:1<13::AID-PSSA13>3.0.CO;2-M)
Esser, A., Runge, E., Zimmermann, R. and Langbein, W. W. 2000. Photoluminescence and radiative lifetime of trions in GaAs quantum wells. Physical Review B 62(12), pp. 8232-8239. (10.1103/PhysRevB.62.8232)
Woggon, U., Gindele, F., Langbein, W. W. and Hvam, J. 2000. Quantum kinetic exciton-LO-phonon interaction in CdSe. Physical Review B 61(3), pp. 1935-1940. (10.1103/PhysRevB.61.1935)
Malpuech, G., Kavokin, A., Langbein, W. W. and Hvam, J. 2000. Resonant Rayleigh scattering of exciton-polaritons in multiple quantum wells. Physical Review Letters 85(3), pp. 650-653. (10.1103/PhysRevLett.85.650)
Langbein, W. W., Zimmermann, R., Runge, E. and Hvam, J. M. 2000. Spin relaxation without coherence loss: Fine-structure splitting of localized excitons. physica status solidi (b) 221(1), pp. 249-253. (10.1002/1521-3951(200009)221:1<349::AID-PSSB349>3.0.CO;2-A)
Gindele, F., Hild, K., Langbein, W. W. and Woggon, U. 2000. Temperature-dependent line widths of single excitons and biexcitons. Journal of Luminescence 87-89, pp. 381-383. (10.1016/S0022-2313(99)00409-3)
Esser, A., Runge, E., Zimmermann, R. and Langbein, W. W. 2000. Trions in GaAs quantum wells: Photoluminescence lineshape analysis. physica status solidi (a) 178(1), pp. 489-494. (10.1002/1521-396X(200003)178:1<489::AID-PSSA489>3.0.CO;2-R)

1999

Borri, P., Langbein, W. W., Mørk, J. and Hvam, J. M. 1999. Heterodyne pump-probe and four-wave mixing in semiconductor optical amplifiers using balanced lock-in detection. Optics Communications 169(1-6), pp. 317-324. (10.1016/S0030-4018(99)00391-0)
Borri, P., Langbein, W. W., Mørk, J., Hvam, J. M., Heinrichsdorff, F., Mao, M. -. and Bimberg, D. 1999. Dephasing in InAs/GaAs quantum dots. Physical Review B 60(11), pp. 7784 -7787. (10.1103/PhysRevB.60.7784)
Borri, P., Langbein, W. W., Hvam, J. M. and Martelli, F. 1999. Binding energy and dephasing of biexcitons in In0.18Ga0.82As/GaAs single quantum wells. Physical Review B 60(7), pp. 4505-4508. (10.1103/PhysRevB.60.4505)
Borri, P., Scaffetti, S., Mørk, J., Langbein, W. W., Hvam, J. M., Mecozzi, A. and Martelli, F. 1999. Measurement and calculation of the critical pulsewidth for gain saturation in semiconductor optical amplifiers. Optics Communications 164(1-3), pp. 51-55. (10.1016/S0030-4018(99)00175-3)
Borri, P., Langbein, W. W., Hvam, J. and Martelli, F. 1999. Well-width dependence of exciton-phonon scattering in InxGa1-xAs/GaAs single quantum wells. Physical Review B 59(3), pp. 2215-2222. (10.1103/PhysRevB.59.2215)
Hvam, J. M., Langbein, W. W. and Borri, P. 1999. Ultrafast dynamics of confined and localized excitons in low-dimensional semiconductors. Presented at: Conference on Ultrafast Phenomena in Semiconductors III, San Jose, CA, 27-29 January 1999 Presented at Tsen, K. F. ed.Ultrafast Phenomena in Semiconductors III: 27-29 January, 1999, San Jose, California. SPIE Proceedings Series Vol. 3624. Bellingham, WA: The International Society for Optical Engineering (SPIE) pp. 40-48., (10.1117/12.349310)
Langbein, W. W. 1999. Comment on "High efficient biexciton photoluminescence observed from single ZnCdSe quantum wells with continuous wave cold carrier generation" [Appl. Phys. Lett. 74, 1138 (1999)]. Applied Physics Letters 75(14), pp. 2150. (10.1063/1.124946)
Wagner, H., Tranitz, H., Preis, H., Langbein, W. W., Leosson, K. and Hvam, J. 1999. Exciton dephasing and biexciton binding in CdSe/ZnSe islands. Physical Review B 60(15), pp. 10640-10643. (10.1103/PhysRevB.60.10640)
Gindele, F., Woggon, U., Langbein, W. W., Hvam, J., Leonardi, K., Hommel, D. and Selke, H. 1999. Excitons, biexcitons, and phonons in ultrathin CdSe/ZnSe quantum structures. Physical Review B 60(12), pp. 8773-8782. (10.1103/PhysRevB.60.8773)
Wagner, H., Schätz, A., Langbein, W. W., Hvam, J. and Smirl, A. 1999. Interaction-induced effects in the nonlinear coherent response of quantum-well excitons. Physical Review B 60(7), pp. 4454-4457. (10.1103/PhysRevB.60.4454)
Langbein, W. W. and Hvam, J. 1999. Localization-enhanced biexciton binding in semiconductors. Physical Review B 59(23), pp. 15405-15408. (10.1103/PhysRevB.59.15405)
Klochikhin, A. et al. 1999. Luminescence spectra and kinetics of disordered solid solutions. Physical Review B 59(20), pp. 12947-12972. (10.1103/PhysRevB.59.12947)
Wagner, H., Langbein, W. W. and Hvam, J. 1999. Mixed biexcitons in single quantum wells. Physical Review B 59(7), pp. 4584-4587. (10.1103/PhysRevB.59.4584)
Yu, P. et al. 1999. Optical anisotropy in vertically coupled quantum dots. Physical Review B 60(24), pp. 16680-16685. (10.1103/PhysRevB.60.16680)
Jensen, J. R., Hvam, J. M. and Langbein, W. W. 1999. Optical properties of InAlGaAs quantum wells: Influence of segregation and band bowing. Journal of Applied Physics 86(5), pp. 2584. (10.1063/1.371096)
Gindele, F., Hild, K., Langbein, W. and Woggon, U. 1999. Phonon interaction of single excitons and biexcitons. Physical Review B 60(4), pp. R2157-R2160. (10.1103/PhysRevB.60.R2157)
Gindele, F. et al. 1999. Phonon interaction of single excitons in CdSe/ZnSe quantum dot structures. Journal of Luminescence 83-84, pp. 305-308. (10.1016/S0022-2313(99)00116-7)
Bozhevolnyi, S. I., Langbein, W. W. and Hvam, J. M. 1999. Polarization contrast in reflection near-field optical microscopy with uncoated fibre tips. Journal of Microscopy 194(2-3), pp. 500-506. (10.1046/j.1365-2818.1999.00502.x)
Langbein, W. W., Hvam, J. and Zimmermann, R. 1999. Time-Resolved Speckle Analysis: A New Approach to Coherence and Dephasing of Optical Excitations in Solids. Physical Review Letters 82(5), pp. 1040-1043. (10.1103/PhysRevLett.82.1040)
Langbein, W. W., Gislason, H. and Hvam, J. 1999. Transient four-wave mixing in T-shaped GaAs quantum wires. Physical Review B 60(24), pp. 16667-16674. (10.1103/PhysRevB.60.16667)

1998

Kalt, H., Hoffmann, J., Umlauf, M., Langbein, W. W. and Hvam, J. M. 1998. Relaxation of nonthermal hh and lh excitons in ZnSe quantum wells. physica status solidi (b) 206(1), pp. 103-109., article number: http://dx.doi.org/10.1002/(SICI)1521-3951(199803)206:1<103::AID-PSSB103>3.0.CO;2-O. (10.1002/(SICI)1521-3951(199803)206:1<103::AID-PSSB103>3.0.CO;2-O)
Langbein, W. W., Borri, P. and Hvam, J. M. 1998. Coherent exciton and biexciton nonlinearities in semiconductor nanostructures: effects of disorder. Presented at: 10th International Conference on Ultrafast Phenomena in Semiconductors, Vilnius, Lithuania, August-September 1998 Presented at Steponas, A. and Dargys, A. eds.Ultrafast Phenomena in Semiconductors: Proceedings of the 10th International Symposium on Ultrafast Phenomena in Semiconductors (10-UFPS), held in Vilnius, Lithuania, August/September 1998. Materials Science Forum Vol. 297-8. Zurich: Trans Tech Publications pp. 73-78.
Borri, P., Langbein, W. W. and Hvam, J. M. 1998. Ultrafast spectroscopy of semiconductor devices. Presented at: 10th International Symposium on Ultrafast Phenomena in Semiconductors, Vilnius, Lithuania, August-September 1998 Presented at Asmontas, S. and Dargys, A. eds.Ultrafast phenomena in semiconductors : proceedings of the 10th International Symposium on Ultrafast Phenomena in Semiconductors (10-UFPS), held in Vilnius, Lithuania, August/September 1998. Materials Science Forum Vol. 297-8. Zurich: Trans TechPublications pp. 67-71.
Woggon, U. et al. 1998. 3D versus 1D quantum confinement in coherently strained CdS/ZnS quantum structures. physica status solidi (b) 206(1), pp. 501-506. (10.1002/(SICI)1521-3951(199803)206:1<501::AID-PSSB501>3.0.CO;2-G)
Schätz, A. et al. 1998. Coherent phenomena and interaction of excitons in wide ZnSe/Zn1?xMgxSe single quantum wells. Journal of Crystal Growth 184(18), pp. 672-675. (10.1016/S0022-0248(98)80140-1)
Umlauff, M. et al. 1998. Direct observation of free-exciton thermalization in quantum-well structures. Physical Review B 57(3), pp. 1390-1393. (10.1103/PhysRevB.57.1390)
Wagner, H., Kühnelt, M., Langbein, W. W. and Hvam, J. 1998. Dispersion of the second-order nonlinear susceptibility in ZnTe, ZnSe, and ZnS. Physical Review B 58(16), pp. 10494-10501. (10.1103/PhysRevB.58.10494)
Gindele, F., Woggon, U., Langbein, W. W., Hvam, J., Hetterich, M. and Klingshirn, C. 1998. Enhancement of exchange interaction in ultrathin CdS/ZnS quantum structures. Solid State Communications 106(10), pp. 653-657. (10.1016/S0038-1098(98)00146-X)
Wagner, H., Langbein, W. W., Hvam, J., Bacher, G., Kümmell, T. and Forchel, A. 1998. Exciton dephasing in ZnSe quantum wires. Physical Review B 57(3), pp. 1797-1800. (10.1103/PhysRevB.57.1797)
Gindele, F. et al. 1998. Exciton localisation in CdSe islands buried in a quantum well of Zn1−xCdxSe. Journal of Crystal Growth 184-18, pp. 306-310. (10.1016/S0022-0248(98)80065-1)
Wagner, H., Schätz, A., Maier, R., Langbein, W. W. and Hvam, J. 1998. Interaction and dephasing of center-of-mass quantized excitons in wide ZnSe/Zn0.94Mg0.06Se quantum wells. Physical Review B 57(3), pp. 1791-1796. (10.1103/PhysRevB.57.1791)
Wagner, H., Schätz, A., Maier, R., Langbein, W. W. and Hvam, J. 1998. Interaction-induced dephasing of excitons in wide ZnSe/ZnMgSe single quantum wells. Physica E: Low-dimensional Systems and Nanostructures 2(1-4), pp. 82-86. (10.1016/S1386-9477(98)00019-8)
Langbein, W. W. and Hvam, J. M. 1998. Localized Biexcitons in Quasi-2D and Quasi-3D Systems. physica status solidi (b) 206(1), pp. 111-118. (10.1002/(SICI)1521-3951(199803)206:1<111::AID-PSSB111>3.0.CO;2-S)
Dorr, U. et al. 1998. Optical properties of (Al[sub x]Ga[sub 1?x])[sub 0.52]In[sub 0.48]P at the crossover from a direct-gap to an indirect-gap semiconductor. Journal of Applied Physics 83(4), pp. 2241-2249. (10.1063/1.366963)
Kalt, H. et al. 1998. Thermalization of free excitons in ZnSe quantum wells. Journal of Crystal Growth 184-18, pp. 795-800. (10.1016/S0022-0248(98)80165-6)
Mizeikis, V., Birkedal, D., Langbein, W. W., Lyssenko, V. G. and Hvam, J. M. 1998. Binding of biexcitons in GaAs/AlGaAs superlattices. Acta Physica Polonica Series A 92(5), pp. 923-928.

1997

Borri, P., Langbein, W. W., Birkedal, D., Lyssenko, V. G. and Hvam, J. M. 1997. Nonlinear response of localized excitons: effects of the excitation-induced dephasing. Physica Status Solidi (a) 164(1), pp. 61-65. (10.1002/1521-396X(199711)164:1<61::AID-PSSA61>3.0.CO;2-R)
Mizeikis, V., Birkedal, D., Langbein, W. W., Lyssenko, V. G. and Hvam, J. M. 1997. Binding of biexcitons in GaAs/Al_{x}Ga_{1-x}As superlattices. Physical Review B 55(8), pp. 5284-5289. (10.1103/PhysRevB.55.5284)
Langbein, W. W., Hvam, J. M., Umlauff, M., Kalt, H., Jobst, B. and Hommel, D. 1997. Binding-energy distribution and dephasing of localized biexcitons. Physical Review B 55(12), pp. R7383. (10.1103/PhysRevB.55.R7383)
Mizeikis, V., Birkedal, D., Langbein, W. W. and Hvam, J. M. 1997. Coherent dynamics of interwell excitons in GaAs/AlxGa1-xAs superlattices. Physical Review B 55(12), pp. 7743-7748. (10.1103/PhysRevB.55.7743)
Gindele, F., Reimann, T., Woggon, U., Langbein, W. W. and Hvam, J. M. 1997. Coherent interaction of three-dimensionally confined electron–hole pairs with LO-phonons. physica status solidi (b) 204(1), pp. 42-44., article number: http://dx.doi.org/10.1002/1521-3951(199711)204:1<42::AID-PSSB42>3.0.CO;2-P. (10.1002/1521-3951(199711)204:1<42::AID-PSSB42>3.0.CO;2-P)

My research interests are

Quantum optics and ultrafast spectroscopy of semiconductor nanostructures, microcavities, and quantum-dot optical amplifiers.
Application of optical spectroscopy to life-science, focussing on the techniques of coherent anti-stokes Raman scattering (CARS) microscopy, fluorescent resonant transfer, quantitative phase imaging, label-free optical biosensors using microcavities, and statistical analysis of individual quantum emitters such as colloidal quantum dots.
Electromagnetic simulations and the resonant state expansion

I hold first- and second-year tutorials, and supervise 3rd and 4th year project students.

In the past years I have been teaching modules in optical microscopy, condensed matter physics, theoretical physics, and quantum optics.

I am supervising post-doctoral fellows and post-graduate students.

Since 2007 Cardiff University, Professor of Physics in the School of Physics and Astronomy
2006 Cardiff University, Reader in Physics in the School of Physics and Astronomy
2004 Cardiff University, Senior Lecturer in Physics in the School of Physics and Astronomy
2003 Habilitation in Physics, University of Dortmund, Germany. Thesis on “Speckle-Analysis of Resonant Light Emission from Solids”
1998 Assistant Professor at the University of Dortmund, Germany,
1995 Assistant Research Professor at the Mikroelektronik Centret, Danish Technical University, Lyngby, Denmark
1995 PhD in Physics at the University of Karlsruhe, Germany, Thesis on ”Many-body eﬀects and carrier dynamics in type-II superlattices”
1992 Diploma in Physics with distinction, Department of Physics, University of Kaiserslautern, Germany. Thesis on ”Magnetoexcitons and carrier dynamics in GaAs/AlGaAs quantum wells”

Honours and awards

Royal Society Leverhulme Trust Senior Research Fellow
Fellow of the Learned Society of Wales

Professional memberships

Learned Society of Wales (LSW)
Institute of Physics (IOP)
Optical Society of America (OSA)
Deutsche Physikalische Gesellschaft (DPG)
Royal Microscopical Society (RMS)

Academic positions

I was external PhD examiner in University of Lund (Sweden), EPF Lausanne (Switzerland), Universite Fourier, Grenoble (France)

Optical spectroscopy and imaging
Raman and coherent Raman spectroscopy and imaging
Quantum optics of semiconductor nanostructures
Biosensing
Plasmonics
Other topics within my expertise (see publication list)

Contact Details

LangbeinWW@cardiff.ac.uk
+44 29208 70172
Queen's Buildings - North Building, Room N/1.19, 5 The Parade, Newport Road, Cardiff, CF24 3AA

Gold particles allow detection of nanoscale processes

07 November 2017