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Professor Stephen Lynch
Teams and roles for Stephen Lynch
Deputy Head of School
Quantum Materials Group
Overview
I have a dual role within the University. I am a research active teaching academic, and I have a senior management role within the College of Physical Sciences and Engineering.
In my academic job, I teach the 2nd year core module, Introduction to Condensed Matter Physics. My research explores how electromagnetic radiation interacts with matter on timescales from picoseconds to milliseconds. I work with ultraviolet, visible, infrared, and THz light. I am also interested in the quantum optical properties of materials.
In my Dean job, I look after the College’s Research and Innovation portfolio. This covers the seven constituent academic Schools, Architecture, Chemistry, Computer Science & Informatics, Earth & Environmental Sciences, Engineering, Mathematics, and Physics & Astronomy.
Publication
2024
- James, F. L. L. et al. 2024. Blue delayed luminescence emission in neutral nitrogen vacancy containing chemical vapor deposition synthetic diamond. physica status solidi (a) – applications and materials science 221 (8) 2300651. (10.1002/pssa.202300651)
- Komies, S. et al., 2024. Low-cost thermal-infrared 'THz-Torch' spectroscopy. IEEE Access 12 , pp.21868-21885. (10.1109/ACCESS.2024.3359054)
- Pritchett, J. D. et al., 2024. Giant microwave-optical Kerr nonlinearity via Rydberg excitons in cuprous oxide. APL Photonics 9 (3) 031303. (10.1063/5.0192710)
2023
- Hekmati, R. et al. 2023. Bullseye dielectric cavities for photon collection from a surface-mounted quantum-light-emitter. Scientific Reports 13 (1) 5316. (10.1038/s41598-023-32359-0)
2022
- Gallagher, L. A. P. et al., 2022. Microwave-optical coupling via Rydberg excitons in cuprous oxide. Physical Review Research 4 (1) 013031. (10.1103/PhysRevResearch.4.013031)
- Rogers, J. P. et al., 2022. High-resolution nanosecond spectroscopy of even-parity Rydberg excitons in Cu2O. Physical Review B 105 (11) 115206. (10.1103/PhysRevB.105.115206)
2021
- Dhara, S. et al. 2021. Tail state mediated conduction in zinc tin oxide thinfilm phototransistors under below bandgap optical excitation. Scientific Reports 11 (1) 19016. (10.1038/s41598-021-98339-4)
- Lynch, S. A. et al. 2021. Rydberg excitons in synthetic cuprous oxide (Cu2O). Physical Review Materials 5 (8) 086402. (10.1103/PhysRevMaterials.5.084602)
- Pavlov, S. G. et al., 2021. Infrared absorption cross sections, and oscillator strengths of interstitial and substitutional double donors in silicon. Physical Review Materials 5 (11) 114607. (10.1103/PhysRevMaterials.5.114607)
2020
- McGuinness, C. D. et al., 2020. Separation of natural from laboratory-grown diamond using time-gated luminescence imaging. Gems & Gemmology 56 (2), pp.220-229. (10.5741/GEMS.56.2.220)
2019
- Dhara, S. et al. 2019. Photoconductive laser spectroscopy as a method to enhance defect spectral signatures in amorphous oxide semiconductor thin- film transistors. Applied Physics Letters 114 (1) 011907. (10.1063/1.5070141)
2018
- Wassell, A. M. et al. 2018. Anomalous green luminescent properties in CVD synthetic diamonds. physica status solidi (a) 215 (22) 1800292. (10.1002/pssa.201800292)
2017
- Mandal, S. et al. 2017. Surface zeta potential and diamond seeding on gallium nitride films. ACS Omega 2 (10), pp.7275-7280. (10.1021/acsomega.7b01069)
2016
- Matmon, G. et al., 2016. Optical response from terahertz to visible light of electronuclear transitions in LiYF4:Ho3+. Physical Review B 94 (20) 205132. (10.1103/PhysRevB.94.205132)
2013
- Astrov, Y. A. et al., 2013. Silicon with an increased content of monoatomic sulfur centers: Sample fabrication and optical spectroscopy. Semiconductors 47 (2), pp.247-251. (10.1134/S1063782613020048)
- Hübers, H. et al., 2013. Isotope effect on the lifetime of the 2p0 state in phosphorus-doped silicon. Physical Review B: Condensed Matter and Materials Physics 88 (3) 035201. (10.1103/PhysRevB.88.035201)
- Vinh, N. Q. et al., 2013. Time-resolved dynamics of shallow acceptor transitions in silicon. Physical Review X 3 (1) 011019. (10.1103/PhysRevX.3.011019)
2012
- Hamdy, M. S. et al., 2012. Parameters controlling the photocatalytic performance of ZnO/Hombikat TiO2 composites. Journal of Photochemistry and Photobiology A: Chemistry 228 (1), pp.1-7. (10.1016/j.jphotochem.2011.11.001)
- Nickels, P. et al., 2012. Laboratory scale water circuit including a photocatalytic reactor and a portable in-stream sensor to monitor pollutant degradation. Industrial & Engineering Chemistry Research 51 (8), pp.3301-3308. (10.1021/ie202366m)
2010
- Greenland, P. T. et al., 2010. Coherent control of Rydberg states in silicon. Nature 465 (7301), pp.1057-1061. (10.1038/nature09112)
- Lynch, S. A. et al. 2010. Quantum control of phosphorus donor rydberg states in silicon. Presented at: 7th IEEE International Conference on Group IV Photonics (GFP), Beijing, China 1-3 Sept. 2010.. Proceedings of the 7th IEEE International Conference On Group IV Photonics, Beijing, China, 1-3 September 2010. IEEE International Conference on Group IV Photonics Piscataway, NJ: IEEE. , pp.380-382. (10.1109/GROUP4.2010.5643318)
- Lynch, S. A. et al. 2010. First observation of a THz photon echo. Presented at: 35th International Conference on Infrared, Millimeter, and Terahertz Waves Rome, Italy 5-10 September 2010. Proceedings of the 35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), Rome, Italy, 5-10 September 2010. Piscataway, NJ: IEEE. , pp.1-2. (10.1109/ICIMW.2010.5612667)
- Lynch, S. A. et al. 2010. Inhomogeneous broadening of phosphorus donor lines in the far-infrared spectra of single-crystalline SiGe. Physical Review. B, Condensed Matter and Materials Physics 82 (24) 245206. (10.1103/PhysRevB.82.245206)
2008
- Lynch, S. A. et al. 2008. Lifetime measurements of group V donor Rydberg states in silicon at THz frequencies. Presented at: 5th IEEE International Conference on Group IV Photonics Sorrento, Italy 17-19 September 2008. Published in: Pavesi, L. and Priolo, F. eds. Group IV Photonics, 2008, 5th IEEE International Conference, 17-19 Sept. 2008. Los Alamitos, CA: IEEE. , pp.24-26. (10.1109/GROUP4.2008.4638084)
- Vinh, N. Q. et al., 2008. Silicon as a model ion trap: time domain measurements of donor Rydberg states. Proceedings of the National Academy of Sciences of the United States of America 105 (31), pp.10649-10653. (10.1073/pnas.0802721105)
- Zhao, M. et al., 2008. Molecular beam epitaxy growth of Si/SiGe bound-to-continuum quantum cascade structures for THz emission. Thin Solid Films 517 (1), pp.34-37. (10.1016/j.tsf.2008.08.091)
2007
- Latkowski, S. et al., 2007. CW-THz wave generation using a multimode semiconductor laser at room temperature. Presented at: LEOS 2007 - The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society Lake Buena Vista, FL, USA 21-25 October 2007. Published in: Golovchenko, E. and Ünlü, M. S. eds. LEOS 2007 - The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Piscataway, NJ: IEEE. , pp.864-865. (10.1109/LEOS.2007.4382682)
2006
- Landais, P. et al., 2006. Self-Pulsation Dynamics in Narrow Stripe Semiconductor Lasers. IEEE Journal of Quantum Electronics 42 (4), pp.381-388. (10.1109/JQE.2006.872309)
- Lynch, S. A. et al. 2006. Toward Silicon-Based Lasers for Terahertz Sources. IEEE Journal of Selected Topics in Quantum Electronics 12 (6), pp.1570-1578. (10.1109/JSTQE.2006.884069)
- Zhao, M. et al., 2006. Low-temperature molecular beam epitaxy growth of Si/SiGe THz quantum cascade structures on virtual substrates. Thin Solid Films 508 (1-2), pp.24-28. (10.1016/j.tsf.2005.07.355)
2005
- Kelsall, R. et al., 2005. Intersubband lifetimes in p-Si/SiGe terahertz quantum cascade heterostructures. Physical Review B: Condensed Matter and Materials Physics 71 (11) 115326. (10.1103/PhysRevB.71.115326)
- Kelsall, R. W. et al., 2005. Optical cavities for Si/SiGe tetrahertz quantum cascade emitters. Optical Materials 27 (5), pp.851-854. (10.1016/j.optmat.2004.08.023)
- Kelsall, R. W. et al., 2005. Optical cavities for Si/SiGe tetrahertz quantum cascade emitters. Optical Materials 27 (5), pp.851-854. (10.1016/j.optmat.2004.08.023)
- Lynch, S. A. et al. 2005. Silicon quantum cascade lasers for THz sources. Presented at: 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS 2005) Sydney, Australia 22-28 October 2005. Published in: Golovchenko, E. ed. Proceedings of the 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS 2005). Los Alamitos, CA: IEEE. , pp.728-729. (10.1109/LEOS.2005.1548213)
- Lynch, S. A. et al. 2005. Temperature dependence of terahertz optical transitions from boron and phosphorus dopant impurities in silicon. Applied Physics Letters 87 (10) 101114. (10.1063/1.2042544)
- Lynch, S. A. et al. 2005. Terahertz emission and absorption characteristics of silicon containing boron and phosphorous impurity dopants and the effect of temperature. Presented at: 2nd IEEE International Conference on Group 1V Photonics 2005 Antwerp, Belgium 21-23 September 2005. 2nd IEEE International Conference on Group 1V Photonics 2005. Piscataway, NJ: IEEE. , pp.13-16. (10.1109/GROUP4.2005.1516386)
- Paul, D. J. et al., 2005. Towards a Si/SiGe quantum cascade laser for terahertz applications. Presented at: Symposium F on Group IV Semiconductor Nanostructures held at the 2004 MRS Fall Meeting Boston, MA, USA 29 November - 2 December 2004. Symposium F – Group IV Semiconductor Nanostructures. MRS Proceedings Vol. 832. Warrandale, PA: Materials Research Society. , pp.59-68. (10.1557/PROC-832-F4.1)
- Townsend, P. et al., 2005. LO phonon scattering as a depopulation mechanism in Si/SiGe quantum cascades. Presented at: 2nd IEEE International Conference on Group 1V Photonics Antwerp, Belgium 21-23 September 2005. 2nd IEEE International Conference on Group 1V Photonics 2005. Piscataway, NJ: IEEE. , pp.7-9. (10.1109/GROUP4.2005.1516384)
- Zhang, J. et al., 2005. SiGe quantum cascade structures for light emitting devices. Journal of Crystal Growth 278 (1-4), pp.488-494. (10.1016/j.jcrysgro.2004.12.046)
- Zhao, M. et al., 2005. Growth and characterization of strain-symmetried Si/SiGe THz quantum cascade structures. Presented at: 2nd IEEE International Conference on Group 1V Photonics 2005 Antwerp, Belgium 21-23 September 2005. 2nd IEEE International Conference on Group 1V Photonics. Piscataway, NJ: IEEE. , pp.10-12. (10.1109/GROUP4.2005.1516385)
2004
- Kelsall, R. W. et al., 2004. Silicon germanium quantum cascade heterostructures for infrared emission. Presented at: 1st IEEE International Conference on Group IV Photonics Hong Kong, China 29 September -1 October 2004. First IEEE International Conference on Group IV Photonics, 29 Sept.-1 Oct. 2004. Los Alamitos, CA: IEEE. , pp.34-36. (10.1109/GROUP4.2004.1416644)
- Kelsall, R. W. et al., 2004. Towards SiGe Terahertz VCSELs. Materials Science Forum 453-4 , pp.1-8. (10.4028/www.scientific.net/MSF.453-454.1)
- Lynch, S. A. et al. 2004. Temperature dependence of self-pulsation in compact disc lasers. IEE Proceedings - Optoelectronics 151 (6), pp.496-501. (10.1049/ip-opt:20040792)
- Paul, D. J. et al., 2004. In search of a Si/SiGe THz quantum cascade laser. Presented at: Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems 2004 Atlanta, GA, USA 8-10 September 2004. Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems 2004. Warrandale, MA: IEEE. , pp.143-146. (10.1109/SMIC.2004.1398188)
2003
- Bates, R. et al., 2003. Interwell intersubband electroluminescence from Si/SiGe quantum cascade emitters. Applied Physics Letters 83 (20) 4092. (10.1063/1.1626003)
- Kelsall, R. W. et al., 2003. Terahertz Emission From Silicon-Germanium Quantum Cascades. Presented at: Towards the First Silicon Laser - NATO Advanced Research Workshop Trento, Italy 21-26 September 2002. Published in: Pavesi, L. , Gaponenko, S. and Dal Negro, L. eds. Towards the First Silicon Laser: Proceedings of the NATO Advanced Research Workshop. Vol. VI.NATO Science Series Vol. 93. Dordrecht: Springer Netherlands. , pp.367-382. (10.1007/978-94-010-0149-6_33)
- Liew, S. L. et al., 2003. Analysis of terahertz-emitting SiGe quantum cascade structures by transmission electron microscopy. Presented at: Microscopy of semiconducting materials 2003 Cambridge, UK 31 March - 3 April 2003. Published in: Cullis, A. G. and Midgley, P. A. eds. Microscopy of semiconducting materials 2003: proceedings of the Institute of Physics conference, Cambridge University, 31 March - 3 April 2003. Institute of Physics Conference Series Vol. 180. Bristol: IOP Publishing. , pp.155-158.
- Lynch, S. et al. 2003. Far infrared (THz) electroluminescence from Si/SiGe quantum cascade heterostructures. Presented at: Optics and Photonics Technologies and Applications Galway, Ireland 5 - 6 Sept 2002. Published in: Thomas, J. G. ed. Opto-Ireland 2002 : optics and photonics technologies and applications : 5-6 September 2002, Galway, Ireland (Proceedings). Proceedings of SPIE--the International Society for Optical Engineering Vol. 4876. Bellingham, WA: SPIE. , pp.140-149. (10.1117/12.463738)
- Lynch, S. A. et al. 2003. Far-infrared (THz) electroluminescence from Si/SiGe quantum cascade heterostructures. Presented at: Opto-Ireland 2002: Optics and Photonics Technologies and Applications Galway, Ireland 5 September 2002. Published in: Glynn, T. J. ed. Opto-Ireland 2002: Optics and Photonics Technologies and Applications, 5 September 2002, Galway, Ireland. Proceedings of SPIE Vol. 4876. Bellingham, WA: SPIE - International Society for Optical Engineering. , pp.140-149. (10.1117/12.463738)
- Paul, D. J. et al., 2003. Electroluminescence from Si/SiGe quantum cascade emitters. Physica E: Low-dimensional Systems and Nanostructures 16 (3-4), pp.309-314. (10.1016/S1386-9477(02)00689-6)
- Paul, D. J. et al., 2003. Si/SiGe quantum-cascade emitters for terahertz applications. Physica E: Low-dimensional Systems and Nanostructures 16 (1), pp.147-155. (10.1016/S1386-9477(02)00590-8)
- Pidgeon, C. R. et al., 2003. THz intersubband dynamics in p-Si/SiGe quantum well emitter structures. Physica Status Solidi (B) – basic solid state physics 237 (1), pp.381-385. (10.1002/pssb.200301784)
2002
- Kelsall, R. W. et al., 2002. Terahertz intersubband emission from silicon-germanium quantum cascades. Presented at: IEEE Tenth International Conference on Terahertz Electronics Cambridge, UK 9-10 September 2002. Published in: Chamberlain, J. M. et al., Proceedings of the Tenth International Conference on Terahertz Electronics. Warrandale, MA: IEEE. , pp.9-12. (10.1109/THZ.2002.1037575)
- Lynch, S. A. et al. 2002. Intersubband electroluminescence from Si/SiGe cascade emitters at terahertz frequencies. Applied Physics Letters 81 (9) 1543. (10.1063/1.1501759)
- Lynch, S. A. et al. 2002. Si-based electroluminescence at THz frequencies. Materials Science and Engineering: B 89 (1-3), pp.10-12. (10.1016/S0921-5107(01)00782-6)
- Murzyn, P. et al., 2002. Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures. Applied Physics Letters 80 (8) 1456. (10.1063/1.1452794)
- Pidgeon, C. R. et al., 2002. THz intersubband dynamics in p-Si/SiGe quantum well structures. Physica E: Low-dimensional Systems and Nanostructures 13 (2-4), pp.904-907. (10.1016/S1386-9477(02)00231-X)
1999
- Mirasso, C. R. et al., 1999. Self-pulsating semiconductor lasers: theory and experiment. IEEE Journal of Quantum Electronics 35 (5), pp.764-770. (10.1109/3.760324)
- Rees, P. et al., 1999. A theoretical analysis of optical clock extraction using a self-pulsating laser diode. IEEE Journal of Quantum Electronics 35 (2), pp.221-227. (10.1109/3.740744)
1998
- Egan, A. et al., 1998. All-optical synchronization of self-pulsating laser diodes with frequency multiplication and division. Journal of Modern Optics 45 (6), pp.1239-1248. (10.1080/095003498151366)
- Lynch, S. A. et al. 1998. Temperature dependence of self-pulsation in narrow-stripe gain-guided compact disk laser diodes. Presented at: Laser Diodes and Applications III Québec, Canada 15-16 July 1998. Published in: Galarneau, P. ed. Laser Diodes and Applications III, 15-16 July 1998, Quebec, Canada. Proceedings of SPIE Vol. 3415. Bellingham, WA: SPIE - International Society for Optical Engineering. , pp.2-10. (10.1117/12.326618)
1996
- Egan, A. et al., 1996. All-optical synchronization of self-pulsating laser diodes. Applied Physics Letters 68 (25) 3534. (10.1063/1.116521)
- Egan, A. et al., 1996. An experimental and theoretical analysis of jitter in self-pulsating lasers synchronized to periodic electrical signals. IEEE Photonics Technology Letters 8 (6), pp.758-760. (10.1109/68.502085)
Articles
- Astrov, Y. A. et al., 2013. Silicon with an increased content of monoatomic sulfur centers: Sample fabrication and optical spectroscopy. Semiconductors 47 (2), pp.247-251. (10.1134/S1063782613020048)
- Bates, R. et al., 2003. Interwell intersubband electroluminescence from Si/SiGe quantum cascade emitters. Applied Physics Letters 83 (20) 4092. (10.1063/1.1626003)
- Dhara, S. et al. 2019. Photoconductive laser spectroscopy as a method to enhance defect spectral signatures in amorphous oxide semiconductor thin- film transistors. Applied Physics Letters 114 (1) 011907. (10.1063/1.5070141)
- Dhara, S. et al. 2021. Tail state mediated conduction in zinc tin oxide thinfilm phototransistors under below bandgap optical excitation. Scientific Reports 11 (1) 19016. (10.1038/s41598-021-98339-4)
- Egan, A. et al., 1998. All-optical synchronization of self-pulsating laser diodes with frequency multiplication and division. Journal of Modern Optics 45 (6), pp.1239-1248. (10.1080/095003498151366)
- Egan, A. et al., 1996. All-optical synchronization of self-pulsating laser diodes. Applied Physics Letters 68 (25) 3534. (10.1063/1.116521)
- Egan, A. et al., 1996. An experimental and theoretical analysis of jitter in self-pulsating lasers synchronized to periodic electrical signals. IEEE Photonics Technology Letters 8 (6), pp.758-760. (10.1109/68.502085)
- Gallagher, L. A. P. et al., 2022. Microwave-optical coupling via Rydberg excitons in cuprous oxide. Physical Review Research 4 (1) 013031. (10.1103/PhysRevResearch.4.013031)
- Greenland, P. T. et al., 2010. Coherent control of Rydberg states in silicon. Nature 465 (7301), pp.1057-1061. (10.1038/nature09112)
- Hamdy, M. S. et al., 2012. Parameters controlling the photocatalytic performance of ZnO/Hombikat TiO2 composites. Journal of Photochemistry and Photobiology A: Chemistry 228 (1), pp.1-7. (10.1016/j.jphotochem.2011.11.001)
- Hekmati, R. et al. 2023. Bullseye dielectric cavities for photon collection from a surface-mounted quantum-light-emitter. Scientific Reports 13 (1) 5316. (10.1038/s41598-023-32359-0)
- Hübers, H. et al., 2013. Isotope effect on the lifetime of the 2p0 state in phosphorus-doped silicon. Physical Review B: Condensed Matter and Materials Physics 88 (3) 035201. (10.1103/PhysRevB.88.035201)
- James, F. L. L. et al. 2024. Blue delayed luminescence emission in neutral nitrogen vacancy containing chemical vapor deposition synthetic diamond. physica status solidi (a) – applications and materials science 221 (8) 2300651. (10.1002/pssa.202300651)
- Kelsall, R. et al., 2005. Intersubband lifetimes in p-Si/SiGe terahertz quantum cascade heterostructures. Physical Review B: Condensed Matter and Materials Physics 71 (11) 115326. (10.1103/PhysRevB.71.115326)
- Kelsall, R. W. et al., 2005. Optical cavities for Si/SiGe tetrahertz quantum cascade emitters. Optical Materials 27 (5), pp.851-854. (10.1016/j.optmat.2004.08.023)
- Kelsall, R. W. et al., 2005. Optical cavities for Si/SiGe tetrahertz quantum cascade emitters. Optical Materials 27 (5), pp.851-854. (10.1016/j.optmat.2004.08.023)
- Kelsall, R. W. et al., 2004. Towards SiGe Terahertz VCSELs. Materials Science Forum 453-4 , pp.1-8. (10.4028/www.scientific.net/MSF.453-454.1)
- Komies, S. et al., 2024. Low-cost thermal-infrared 'THz-Torch' spectroscopy. IEEE Access 12 , pp.21868-21885. (10.1109/ACCESS.2024.3359054)
- Landais, P. et al., 2006. Self-Pulsation Dynamics in Narrow Stripe Semiconductor Lasers. IEEE Journal of Quantum Electronics 42 (4), pp.381-388. (10.1109/JQE.2006.872309)
- Lynch, S. A. et al. 2021. Rydberg excitons in synthetic cuprous oxide (Cu2O). Physical Review Materials 5 (8) 086402. (10.1103/PhysRevMaterials.5.084602)
- Lynch, S. A. et al. 2002. Intersubband electroluminescence from Si/SiGe cascade emitters at terahertz frequencies. Applied Physics Letters 81 (9) 1543. (10.1063/1.1501759)
- Lynch, S. A. et al. 2002. Si-based electroluminescence at THz frequencies. Materials Science and Engineering: B 89 (1-3), pp.10-12. (10.1016/S0921-5107(01)00782-6)
- Lynch, S. A. et al. 2010. Inhomogeneous broadening of phosphorus donor lines in the far-infrared spectra of single-crystalline SiGe. Physical Review. B, Condensed Matter and Materials Physics 82 (24) 245206. (10.1103/PhysRevB.82.245206)
- Lynch, S. A. et al. 2004. Temperature dependence of self-pulsation in compact disc lasers. IEE Proceedings - Optoelectronics 151 (6), pp.496-501. (10.1049/ip-opt:20040792)
- Lynch, S. A. et al. 2006. Toward Silicon-Based Lasers for Terahertz Sources. IEEE Journal of Selected Topics in Quantum Electronics 12 (6), pp.1570-1578. (10.1109/JSTQE.2006.884069)
- Lynch, S. A. et al. 2005. Temperature dependence of terahertz optical transitions from boron and phosphorus dopant impurities in silicon. Applied Physics Letters 87 (10) 101114. (10.1063/1.2042544)
- Mandal, S. et al. 2017. Surface zeta potential and diamond seeding on gallium nitride films. ACS Omega 2 (10), pp.7275-7280. (10.1021/acsomega.7b01069)
- Matmon, G. et al., 2016. Optical response from terahertz to visible light of electronuclear transitions in LiYF4:Ho3+. Physical Review B 94 (20) 205132. (10.1103/PhysRevB.94.205132)
- McGuinness, C. D. et al., 2020. Separation of natural from laboratory-grown diamond using time-gated luminescence imaging. Gems & Gemmology 56 (2), pp.220-229. (10.5741/GEMS.56.2.220)
- Mirasso, C. R. et al., 1999. Self-pulsating semiconductor lasers: theory and experiment. IEEE Journal of Quantum Electronics 35 (5), pp.764-770. (10.1109/3.760324)
- Murzyn, P. et al., 2002. Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures. Applied Physics Letters 80 (8) 1456. (10.1063/1.1452794)
- Nickels, P. et al., 2012. Laboratory scale water circuit including a photocatalytic reactor and a portable in-stream sensor to monitor pollutant degradation. Industrial & Engineering Chemistry Research 51 (8), pp.3301-3308. (10.1021/ie202366m)
- Paul, D. J. et al., 2003. Electroluminescence from Si/SiGe quantum cascade emitters. Physica E: Low-dimensional Systems and Nanostructures 16 (3-4), pp.309-314. (10.1016/S1386-9477(02)00689-6)
- Paul, D. J. et al., 2003. Si/SiGe quantum-cascade emitters for terahertz applications. Physica E: Low-dimensional Systems and Nanostructures 16 (1), pp.147-155. (10.1016/S1386-9477(02)00590-8)
- Pavlov, S. G. et al., 2021. Infrared absorption cross sections, and oscillator strengths of interstitial and substitutional double donors in silicon. Physical Review Materials 5 (11) 114607. (10.1103/PhysRevMaterials.5.114607)
- Pidgeon, C. R. et al., 2003. THz intersubband dynamics in p-Si/SiGe quantum well emitter structures. Physica Status Solidi (B) – basic solid state physics 237 (1), pp.381-385. (10.1002/pssb.200301784)
- Pidgeon, C. R. et al., 2002. THz intersubband dynamics in p-Si/SiGe quantum well structures. Physica E: Low-dimensional Systems and Nanostructures 13 (2-4), pp.904-907. (10.1016/S1386-9477(02)00231-X)
- Pritchett, J. D. et al., 2024. Giant microwave-optical Kerr nonlinearity via Rydberg excitons in cuprous oxide. APL Photonics 9 (3) 031303. (10.1063/5.0192710)
- Rees, P. et al., 1999. A theoretical analysis of optical clock extraction using a self-pulsating laser diode. IEEE Journal of Quantum Electronics 35 (2), pp.221-227. (10.1109/3.740744)
- Rogers, J. P. et al., 2022. High-resolution nanosecond spectroscopy of even-parity Rydberg excitons in Cu2O. Physical Review B 105 (11) 115206. (10.1103/PhysRevB.105.115206)
- Vinh, N. Q. et al., 2008. Silicon as a model ion trap: time domain measurements of donor Rydberg states. Proceedings of the National Academy of Sciences of the United States of America 105 (31), pp.10649-10653. (10.1073/pnas.0802721105)
- Vinh, N. Q. et al., 2013. Time-resolved dynamics of shallow acceptor transitions in silicon. Physical Review X 3 (1) 011019. (10.1103/PhysRevX.3.011019)
- Wassell, A. M. et al. 2018. Anomalous green luminescent properties in CVD synthetic diamonds. physica status solidi (a) 215 (22) 1800292. (10.1002/pssa.201800292)
- Zhang, J. et al., 2005. SiGe quantum cascade structures for light emitting devices. Journal of Crystal Growth 278 (1-4), pp.488-494. (10.1016/j.jcrysgro.2004.12.046)
- Zhao, M. et al., 2008. Molecular beam epitaxy growth of Si/SiGe bound-to-continuum quantum cascade structures for THz emission. Thin Solid Films 517 (1), pp.34-37. (10.1016/j.tsf.2008.08.091)
- Zhao, M. et al., 2006. Low-temperature molecular beam epitaxy growth of Si/SiGe THz quantum cascade structures on virtual substrates. Thin Solid Films 508 (1-2), pp.24-28. (10.1016/j.tsf.2005.07.355)
Conferences
- Kelsall, R. W. et al., 2004. Silicon germanium quantum cascade heterostructures for infrared emission. Presented at: 1st IEEE International Conference on Group IV Photonics Hong Kong, China 29 September -1 October 2004. First IEEE International Conference on Group IV Photonics, 29 Sept.-1 Oct. 2004. Los Alamitos, CA: IEEE. , pp.34-36. (10.1109/GROUP4.2004.1416644)
- Kelsall, R. W. et al., 2003. Terahertz Emission From Silicon-Germanium Quantum Cascades. Presented at: Towards the First Silicon Laser - NATO Advanced Research Workshop Trento, Italy 21-26 September 2002. Published in: Pavesi, L. , Gaponenko, S. and Dal Negro, L. eds. Towards the First Silicon Laser: Proceedings of the NATO Advanced Research Workshop. Vol. VI.NATO Science Series Vol. 93. Dordrecht: Springer Netherlands. , pp.367-382. (10.1007/978-94-010-0149-6_33)
- Kelsall, R. W. et al., 2002. Terahertz intersubband emission from silicon-germanium quantum cascades. Presented at: IEEE Tenth International Conference on Terahertz Electronics Cambridge, UK 9-10 September 2002. Published in: Chamberlain, J. M. et al., Proceedings of the Tenth International Conference on Terahertz Electronics. Warrandale, MA: IEEE. , pp.9-12. (10.1109/THZ.2002.1037575)
- Latkowski, S. et al., 2007. CW-THz wave generation using a multimode semiconductor laser at room temperature. Presented at: LEOS 2007 - The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society Lake Buena Vista, FL, USA 21-25 October 2007. Published in: Golovchenko, E. and Ünlü, M. S. eds. LEOS 2007 - The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Piscataway, NJ: IEEE. , pp.864-865. (10.1109/LEOS.2007.4382682)
- Liew, S. L. et al., 2003. Analysis of terahertz-emitting SiGe quantum cascade structures by transmission electron microscopy. Presented at: Microscopy of semiconducting materials 2003 Cambridge, UK 31 March - 3 April 2003. Published in: Cullis, A. G. and Midgley, P. A. eds. Microscopy of semiconducting materials 2003: proceedings of the Institute of Physics conference, Cambridge University, 31 March - 3 April 2003. Institute of Physics Conference Series Vol. 180. Bristol: IOP Publishing. , pp.155-158.
- Lynch, S. et al. 2003. Far infrared (THz) electroluminescence from Si/SiGe quantum cascade heterostructures. Presented at: Optics and Photonics Technologies and Applications Galway, Ireland 5 - 6 Sept 2002. Published in: Thomas, J. G. ed. Opto-Ireland 2002 : optics and photonics technologies and applications : 5-6 September 2002, Galway, Ireland (Proceedings). Proceedings of SPIE--the International Society for Optical Engineering Vol. 4876. Bellingham, WA: SPIE. , pp.140-149. (10.1117/12.463738)
- Lynch, S. A. et al. 2010. Quantum control of phosphorus donor rydberg states in silicon. Presented at: 7th IEEE International Conference on Group IV Photonics (GFP), Beijing, China 1-3 Sept. 2010.. Proceedings of the 7th IEEE International Conference On Group IV Photonics, Beijing, China, 1-3 September 2010. IEEE International Conference on Group IV Photonics Piscataway, NJ: IEEE. , pp.380-382. (10.1109/GROUP4.2010.5643318)
- Lynch, S. A. et al. 2008. Lifetime measurements of group V donor Rydberg states in silicon at THz frequencies. Presented at: 5th IEEE International Conference on Group IV Photonics Sorrento, Italy 17-19 September 2008. Published in: Pavesi, L. and Priolo, F. eds. Group IV Photonics, 2008, 5th IEEE International Conference, 17-19 Sept. 2008. Los Alamitos, CA: IEEE. , pp.24-26. (10.1109/GROUP4.2008.4638084)
- Lynch, S. A. et al. 2010. First observation of a THz photon echo. Presented at: 35th International Conference on Infrared, Millimeter, and Terahertz Waves Rome, Italy 5-10 September 2010. Proceedings of the 35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), Rome, Italy, 5-10 September 2010. Piscataway, NJ: IEEE. , pp.1-2. (10.1109/ICIMW.2010.5612667)
- Lynch, S. A. et al. 1998. Temperature dependence of self-pulsation in narrow-stripe gain-guided compact disk laser diodes. Presented at: Laser Diodes and Applications III Québec, Canada 15-16 July 1998. Published in: Galarneau, P. ed. Laser Diodes and Applications III, 15-16 July 1998, Quebec, Canada. Proceedings of SPIE Vol. 3415. Bellingham, WA: SPIE - International Society for Optical Engineering. , pp.2-10. (10.1117/12.326618)
- Lynch, S. A. et al. 2005. Silicon quantum cascade lasers for THz sources. Presented at: 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS 2005) Sydney, Australia 22-28 October 2005. Published in: Golovchenko, E. ed. Proceedings of the 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS 2005). Los Alamitos, CA: IEEE. , pp.728-729. (10.1109/LEOS.2005.1548213)
- Lynch, S. A. et al. 2003. Far-infrared (THz) electroluminescence from Si/SiGe quantum cascade heterostructures. Presented at: Opto-Ireland 2002: Optics and Photonics Technologies and Applications Galway, Ireland 5 September 2002. Published in: Glynn, T. J. ed. Opto-Ireland 2002: Optics and Photonics Technologies and Applications, 5 September 2002, Galway, Ireland. Proceedings of SPIE Vol. 4876. Bellingham, WA: SPIE - International Society for Optical Engineering. , pp.140-149. (10.1117/12.463738)
- Lynch, S. A. et al. 2005. Terahertz emission and absorption characteristics of silicon containing boron and phosphorous impurity dopants and the effect of temperature. Presented at: 2nd IEEE International Conference on Group 1V Photonics 2005 Antwerp, Belgium 21-23 September 2005. 2nd IEEE International Conference on Group 1V Photonics 2005. Piscataway, NJ: IEEE. , pp.13-16. (10.1109/GROUP4.2005.1516386)
- Paul, D. J. et al., 2005. Towards a Si/SiGe quantum cascade laser for terahertz applications. Presented at: Symposium F on Group IV Semiconductor Nanostructures held at the 2004 MRS Fall Meeting Boston, MA, USA 29 November - 2 December 2004. Symposium F – Group IV Semiconductor Nanostructures. MRS Proceedings Vol. 832. Warrandale, PA: Materials Research Society. , pp.59-68. (10.1557/PROC-832-F4.1)
- Paul, D. J. et al., 2004. In search of a Si/SiGe THz quantum cascade laser. Presented at: Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems 2004 Atlanta, GA, USA 8-10 September 2004. Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems 2004. Warrandale, MA: IEEE. , pp.143-146. (10.1109/SMIC.2004.1398188)
- Townsend, P. et al., 2005. LO phonon scattering as a depopulation mechanism in Si/SiGe quantum cascades. Presented at: 2nd IEEE International Conference on Group 1V Photonics Antwerp, Belgium 21-23 September 2005. 2nd IEEE International Conference on Group 1V Photonics 2005. Piscataway, NJ: IEEE. , pp.7-9. (10.1109/GROUP4.2005.1516384)
- Zhao, M. et al., 2005. Growth and characterization of strain-symmetried Si/SiGe THz quantum cascade structures. Presented at: 2nd IEEE International Conference on Group 1V Photonics 2005 Antwerp, Belgium 21-23 September 2005. 2nd IEEE International Conference on Group 1V Photonics. Piscataway, NJ: IEEE. , pp.10-12. (10.1109/GROUP4.2005.1516385)
Research
The focus of my research over the past two decades has been on light-matter interactions, more specifically the quantum physics behind these interactions.
During my first seven years as a postdoctoral researcher at the Cavendish Laboratory, I worked on the infrared and THz properties of semiconductor materials, with the goal of understanding whether it is possible to engineer a silicon-based quantum cascade laser. My 2002/2003 papers on THz intersubband electroluminescence from SiGe quantum cascade structures, were world-firsts and are still the most highly cited works in the field.
Following my move to the London Centre for Nanotechnology at UCL, the focus of my work shifted slightly, towards exploiting the THz properties of Group-V donor atoms in silicon for quantum technologies. Much of this work was performed at the FELIX free electron laser facility in the Netherlands. The highlight of this research was my 2010 Nature paper, which represents a breakthrough in the field of silicon-based quantum computing.
When I moved to Cardiff the focus of my work shifted slightly again, towards shorter wavelengths. Chalcogen (Group-VI) doners in silicon can be manipulated with more energetic mid-infrared light. This work was funded by the Leverhulme Trust. I also expanded my research interests to explore the electronic and optical properties of transparent oxide materials (in collaboration with Cambridge). More recently I have been working on Rydberg excitons in cuprous oxide. This fascinating subject bridges the gap between semiconductor and atomic physics. The work is funded by the EPSRC and is done in collaboration with my close colleagues at Durham University. I also have an interest in the optical properties of diamond and two PhD students under my supervision have been funded by De Beers.
Teaching
PX2236: Introduction to Condensed Matter Physics
Biography
My postdoctoral research career began on joining Prof Sir Mike Pepper’s group at the Cavendish Laboratory, at the beginning of 2000, following the successful defence of my PhD at Trinity College Dublin. I was subsequently elected to a Research Fellowship at St Edmund’s College, Cambridge, in 2002. During this time I worked on the development of far-infrared (THz) SiGe quantum cascade devices.
In 2007 I joined the London Centre for Nanotechnology at University College London, working first under the late Prof Marshall Stoneham FRS, and later Prof Gabriel Aeppli FRS. I was awarded an EPSRC Advanced Research Fellowship to work on the physics of far-infrared emission from impurity doped semiconductors later that year.
I moved to Cardiff University mid 2011 to a tenured academic position, first as Senior Lecturer before being promoted to a personal chair. I was appointed Associate Dean of Research for the College of Physical Sciences and Engineering in 2018, and subsequently Dean of Research and Innovation for the College of Physical Sciences and Engineering in 2020, following an open competition.
Professional memberships
I am a currently a Senior Member of the IEEE. I have been a member of the EPSRC College since 2008, and I have served several EPSRC Panels from 2010. I chaired one of the EPSRC ICT Panels in 2013. I have served on the Royal Academy of Engineering Sift Panel for Research Fellowships for 2010 and 2011. I have served on the 2011 IEEE Panel for elevation to Senior Member level.
Contact Details
[email protected]
+44 29208 75315
Queen's Buildings - North Building, Room N/1.21, 5 The Parade, Newport Road, Cardiff, CF24 3AA
+44 29208 75315
Queen's Buildings - North Building, Room N/1.21, 5 The Parade, Newport Road, Cardiff, CF24 3AA