2024

Smith, C. K. , McCarthy, C. and Millar, R. W. (2024) Simulation of photonic crystal enhanced Ge-on-Si single photon avalanche diodes. Optics Express, 32(22), pp. 38805-38818. (doi: 10.1364/OE.531687)

Fleming, F. et al. (2024) Surface-normal illuminated pseudo-planar Ge-on-Si avalanche photodiodes with high gain and low noise. Optics Express, 32(11), 19449. (doi: 10.1364/OE.521417)

McCarthy, C. , Smith, C. , Mowbray, H., Paul, D. and Millar, R. (2024) Ge-on-Si Single Photon Avalanche Diode Performance Enhancement with Photonic Crystal Nano-hole Arrays. In: SPIE OPTO 2024, San Francisco, California, USA, 27 Jan-01 Feb 2024, (doi: 10.1117/12.3001610)

Dumas, D. et al. (2024) Decoupling the dark count rate contributions in Ge-on-Si single photon avalanche diodes. In: SPIE OPTO 2024, San Francisco, California, USA, 27 Jan-01 Feb 2024, (doi: 10.1117/12.3001450)

2023

Yi, X. et al. (2023) Afterpulsing in Ge-on-Si single-photon avalanche diodes. IEEE Photonics Technology Letters, 35(7), pp. 959-962. (doi: 10.1109/lpt.2023.3289653)

Coughlan, C., Mirza, M.M. , Kirdoda, J. , Dumas, D., Smith, C., McCarthy, C. , Millar, R.W. and Paul, D.J. (2023) Effect of Passivation on Selectively Grown Sub-µm Ge-on-Si Single Photon Avalanche Diode Detectors. In: 2023 IEEE Silicon Photonics Conference (SiPhotonics), Arlington, VA, USA, 04-07 Apr 2023, ISBN 9781665486552 (doi: 10.1109/SiPhotonics55903.2023.10141911)

Coughlan, C., Mirza, M. M.A. , Kirdoda, J. , Dumas, D., Smith, C., McCarthy, C. , Mowbray, H., Watson, S. , Millar, R. and Paul, D. J. (2023) Variation of Sidewall Passivation on Sub-um Selectively Grown Ge-on-Si Devices Towards Single Photon Avalanche Detectors. In: SPIE OPTO 2023, San Francisco, CA, USA, 28 Jan-3 Feb 2023, 124170M. ISBN 9781510659391 (doi: 10.1117/12.2665493)

Smith, C. et al. (2023) Simulation and Design Optimization of Germanium-on-Silicon Single Photon Avalanche Diodes. In: SPIE OPTO 2023, San Francisco, CA, USA, 28 Jan-3 Feb 2023, 124260S. ISBN 9781510659575 (doi: 10.1117/12.2650154)

2021

Thorburn, F., Yi, X., Greener, Z. M., Kirdoda, J. , Millar, R. W. , Huddleston, L. L., Paul, D. J. and Buller, G. S. (2021) Ge-on-Si single-photon avalanche diode detectors for short-wave infrared wavelengths. Journal of Physics: Photonics, 4, 012001. (doi: 10.1088/2515-7647/ac3839)

Millar, R. W. et al. (2021) Pseudo-planar Ge-on-Si Single-photon Avalanche Diode Detector with Record Low Noise-equivalent Power. In: SPIE PHOTONEX, Glasgow, UK, 28 Sep - 01 Oct 2021, (doi: 10.1117/12.2599033)

Millar, R. W. et al. (2021) Ge-on-Si Single-Photon Avalanche Diode Detectors with Low Noise Equivalent Power in the Short-Wave Infrared. In: 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 21-25 June 2021, ISBN 9781665418768 (doi: 10.1109/CLEO/Europe-EQEC52157.2021.9542785)

Gallacher, K. , Grickeviciute, U., Millar, R. W. and Paul, D. J. (2021) Ge on Si Photonics Platform for Mid-Infrared Sensors. In: 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Cabo San Lucas, Mexico, 19-21 July 2021, ISBN 9781665416009 (doi: 10.1109/SUM48717.2021.9505799)

Frigerio, J. et al. (2021) Ge-on-Si Based Mid-infrared Plasmonics. In: Silicon Photonics XVI, 06-12 Mar 2021, 116910M. (doi: 10.1117/12.2576175)

2020

Ferre Llin, L. et al. (2020) High sensitivity Ge-on-Si single-photon avalanche diode detectors. Optics Letters, 45(23), pp. 6406-6409. (doi: 10.1364/OL.396756)

Gallacher, K. , Millar, R. W. , Griskeviciute, U., Sinclair, M. , Sorel, M. , Baldassarre, L., Ortolani, M., Soref, R. and Paul, D. J. (2020) Ge-on-Si Waveguide Polarization Rotator Operating in the 8-14 µm Atmospheric Transmission Window. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STh4L.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STh4L.8)

Millar, R. W. et al. (2020) Ge-on-Si Single Photon Avalanche Diode Detectors for LIDAR in the Short Wave Infrared. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, AF2I.6. ISBN 9781943580767 (doi: 10.1364/CLEO_AT.2020.AF2I.6)

Sinclair, M. , Gallacher, K. , Sorel, M. , Bayley, J. C. , McBrearty, E. , Millar, R. W. , Hild, S. and Paul, D. J. (2020) 1.4 Million Q-Factor 780 nm Wavelength Si3N4 Micro-rings for Chip-Scale Atomic Systems. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STu4O.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STu4O.8)

Gallacher, K. , Millar, R. W. , Griskeviciute, U., Sinclair, M. , Sorel, M. , Baldassarre, L., Ortolani, M., Soref, R. and Paul, D. J. (2020) Ge-on-Si Mid-Infrared Waveguide Platform for Molecular Fingerprint Sensing. In: 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 19-23 July 2020, ISBN 9781728184241 (doi: 10.1109/ICTON51198.2020.9203237)

Gallacher, K. et al. (2020) Characterization of integrated waveguides by atomic-force-microscopy-assisted mid-infrared imaging and spectroscopy. Optics Express, 28(15), pp. 22186-22199. (doi: 10.1364/OE.393748)

Thorburn, F. E. et al. (2020) High Efficiency Planar Geometry Germanium-on-silicon Single-photon Avalanche Diode Detectors. In: Advanced Photon Counting Techniques XIV, 27 Apr - 08 May 2020, 113860N. ISBN 9781510635494 (doi: 10.1117/12.2559620)

Kirdoda, J. , Dumas, D. C.S., Millar, R. W. , Mirza, M. M. , Paul, D. J. , Kuzmenko, K., Vines, P., Greener, Z. and Buller, G. S. (2020) Geiger Mode Ge-on-Si Single-Photon Avalanche Diode Detectors. In: 2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP), London, UK, 11-13 Dec 2019, ISBN 9781728149486 (doi: 10.1109/BICOP48819.2019.9059574)

The University Court Of The University of Glasgow. Heriot-Watt University (2020) Single photon avalanche detector, method for use therefore and for its manufacture. .

Sinclair, M. , Gallacher, K. , Sorel, M. , Bayley, J. C., McBrearty, E. , Millar, R. W. , Hild, S. and Paul, D. J. (2020) 1.4 million Q factor Si₃N₄ micro-ring resonator at 780 nm wavelength for chip-scale atomic systems. Optics Express, 28(3), pp. 4010-4020. (doi: 10.1364/OE.381224)

Gallacher, K. , Millar, R. W. , Griskeviciute, U., Sinclair, M. , Sorel, M. , Baldassarre, L., Ortolani, M., Soref, R. and Paul, D. J. (2020) Ultra-broadband mid-infrared Ge-on-Si waveguide polarization rotator. APL Photonics, 5(2), 026102. (doi: 10.1063/1.5134973)

Griskeviciute, U., Millar, R. W. , Gallacher, K. , Valente, J. and Paul, D. J. (2020) Ge-on-Si waveguides for sensing in the molecular fingerprint regime. Optics Express, 28(4), pp. 5749-5757. (doi: 10.1364/OE.382356)

Kuzmenko, K. et al. (2020) 3D LIDAR imaging using Ge-on-Si single–photon avalanche diode detectors. Optics Express, 28(2), pp. 1330-1344. (doi: 10.1364/OE.383243)

2019

Bashir, A., Millar, R. W. , Gallacher, K. , Paul, D. J. , Darbal, A. D., Stroud, R., Ballabio, A., Frigerio, J., Isella, G. and MacLaren, I. (2019) Strain analysis of Ge micro disk using precession electron diffraction. Journal of Applied Physics, 126, 235701. (doi: 10.1063/1.5113761)

Dumas, D. C.S., Kirdoda, J. , Vines, P., Kuzmenko, K., Millar, R. W. , Buller, G. S. and Paul, D. J. (2019) Ge-On-Si High Efficiency Spads at 1310 Nm. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8873357)

Sinclair, M. et al. (2019) High-Q Si3N4 Ring Resonators for Locking 780nm GaAs-Based Distributed Feedback Laser. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8872725)

Gallacher, K. , Griskeviciute, U., Millar, R. W. and Paul, D. J. (2019) Ultra Broadband Mid-Infrared Ge-on-Si Polarization Rotator. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853922)

Griskeviciute, U., Gallacher, K. , Millar, R. W. , Paul, D. J. and MacGilp, I. (2019) Understanding the Sidewall Dependence of Loss for Ge-on-Si Waveguides in the Mid-Infrared. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853945)

Kirdoda, J. , Dumas, D. C.S., Kuzmenko, K., Vines, P., Greener, Z. M., Millar, R. W. , Mirza, M. M. , Buller, G. S. and Paul, D. J. (2019) Geiger Mode Ge-on-Si Single-Photon Avalanche Diode Detectors. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853918)

Millar, R.W. , Griskeviciute, U., Gallacher, K. , Sorel, M. , Paul, D.J. , Baldassarre, L. and Ortolani, M. (2019) Molecular Fingerprint Sensing Using Ge-on-Si Waveguides. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853881)

Gallacher, K. , Sinclair, M. , Millar, R.W. , Sharp, O., Mirando, F., Ternent, G., Mills, G., Casey, B. and Paul, D.J. (2019) Integrated DFB Lasers on Si3N4 Photonic Platform for Chip-Scale Atomic Systems. CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STu4O.7)

Griškevičiūtė, U., Millar, R.W. , Gallacher, K. , Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D.J. (2019) Fingerprint Mid-Infrared Sensing With Germanium on Silicon Waveguides. In: CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019, ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STh1N.2)

Kirdoda, J. , Ferre Llin, L., Kuzmenko, K., Vines, P., Greener, Z., Dumas, D.C.S., Millar, R. , Mirza, M.M. , Buller, G.S. and Paul, D.J. (2019) High Efficiency Planar Ge-on-Si Single-Photon Avalanche Diode Detectors. CLEO: QELS_Fundamental Science 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576

Vines, P., Kuzmenko, K., Kirdoda, J. , Dumas, D. C.S., Mirza, M. M. , Millar, R. W. , Paul, D. J. and Buller, G. S. (2019) High performance planar germanium-on-silicon single-photon avalanche diode detectors. Nature Communications, 10, 1086. (doi: 10.1038/s41467-019-08830-w) (PMID:30842439) (PMCID:PMC6403241)

Millar, R. W. , Gallacher, K. , Griskeviciute, U., Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D. J. (2019) Low Loss Germanium-on-Silicon Waveguides for Integrated Mid-Infrared Photonics. In: SPIE OPTO 2019, San Francisco, CA, USA, 02-07 Feb 2019, 109230S. (doi: 10.1117/12.2510009)

Dumas, D. C.S., Kirdoda, J. , Millar, R. W. , Vines, P., Kuzmenko, K., Buller, G. S. and Paul, D. J. (2019) High-Efficiency Ge-on-Si SPADs for Short-Wave Infrared. In: SPIE Photonics West, San Francisco, CA, USA, 02-07 Feb 2019, p. 1091424. (doi: 10.1117/12.2521067)

Gallacher, K. , Millar, R. W. , Griskevivuite, U., Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D. J. (2019) TuA4.1 - Mid-infrared Sensing with Ge on Si Waveguides (Invited). In: 2019 IEEE Photonics Society Summer Topical Meeting Series (SUM), Ft. Lauderdale, FL, USA, 08-10 Jul 2019, ISBN 9781728105970 (doi: 10.1109/PHOSST.2019.8795039)

Kuzmenko, K. et al. (2019) Planar Geometry Ge-on-Si SPAD Detectors for the Short-wave Infrared. Advanced Photon Counting Techniques XIII, Baltimore, MD, USA, 14-18 Apr 2019. p. 24. ISBN 9781510626218 (doi: 10.1117/12.2518858)

Millar, R.W. , Griskevicuite, U., Gallacher, K. , Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D.J. (2019) Towards a Mid-Infrared Lab-on-Chip Sensor using Ge-on-Si Waveguides. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8871521)

2018

Gallacher, K. , Millar, R.W. , Griškevičiūte, U., Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D.J. (2018) Low loss Ge-on-Si waveguides operating in the 8–14 µm atmospheric transmission window. Optics Express, 26(20), pp. 25667-25675. (doi: 10.1364/OE.26.025667)

Kirdoda, J. , Dumas, D., Vines, P., Kuzmenko, K., Millar, R.W. , Buller, G.S. and Paul, D.J. (2018) Ge on Si Single Photon Avalanche Detectors for Lidar Applications. SPIE Security + Defence 2018, Berlin, Germany, 10-13 Sep 2018.

Bashir, A. et al. (2018) Interfacial sharpness and intermixing in a Ge-SiGe multiple quantum well structure. Journal of Applied Physics, 123(3), 035703. (doi: 10.1063/1.5001158)

Gallacher, K. et al. (2018) Components for Integrated Ge on Si for Mid-Infrared Photonic Sensors. In: 2018 IEEE Photonics Society Summer Topical Meeting Series (SUM), Waikoloa Village, HI, USA, 09-11 Jul 2018, pp. 177-178. ISBN 9781538653432 (doi: 10.1109/PHOSST.2018.8456761)

Gallacher, K. , Millar, R. W. , Paul, D. J. , Mirando, F., Ternent, G., Mills, G. and Casey, B. (2018) Distributed Feedback Lasers Operating at 780 nm Wavelength Integrated on Si Substrates for Chip-scale Atomic Systems. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 67-68. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478720)

Ghisetti, E. A., Dumas, D., Kirdoda, J. , Gallacher, K. , Millar, R. W. , Mirza, M. M.A. and Paul, D. J. (2018) Germanium on Silicon Single Photon Avalanche Detectors Using Silicon-on-Insulator Substrates. Integrated Optics: Devices, Materials, and Technologies XXII, San Francisco, CA, USA, 29 Jan - 01 Feb 2018. (doi: 10.1117/12.2290403)

Millar, R.W. , Gallacher, K. , Griskeviciute, U., Paul, D.J. , Baldassarre, L. and Ortolani, M. (2018) Ge-on-Si Mid-Infrared Waveguides Operating up to 11 μm Wavelength. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 137-138. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478757)

2017

Millar, R.W. , Dumas, D.C.S., Gallacher, K. , Jahandar, P., Myronov, M. and Paul, D.J. (2017) Tensile Strained GeSn Mid-Infrared Light Emitters. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 49-50. ISBN 9781509065677 (doi: 10.1109/GROUP4.2017.8082190)

Frigerio, J. et al. (2017) Optical properties of highly n-doped germanium obtained by in situ doping and laser annealing. Journal of Physics D: Applied Physics, 50(46), 465103. (doi: 10.1088/1361-6463/aa8eca)

Millar, R.W. , Dumas, D.C.S., Gallacher, K.F. , Jahandar, P., MacGregor, C., Myronov, M. and Paul, D.J. (2017) Mid-infrared light emission > 3 µm wavelength from tensile strained GeSn microdisks. Optics Express, 25(21), pp. 25374-25385. (doi: 10.1364/OE.25.025374) (PMID:29041205)

Paul, D. J. et al. (2017) n-Ge on Si for Mid-Infrared Plasmonic Sensors. In: IEEE Photonics Society Summer Topical Meeting Series (SUM 2017), San Juan, Puerto Rico, 10-12 Jul 2017, pp. 125-126. ISBN 9781509065714 (doi: 10.1109/PHOSST.2017.8012682)

Gallacher, K. et al. (2017) Germanium-on-silicon Waveguides for Mid-infrared Photonic Sensing Chips. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 63-64. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082197)

Gallacher, K. et al. (2017) Mid-infrared n-Ge on Si Plasmonic Based Microbolometer Sensors. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 3-4. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082167)

2016

Gallacher, K. , Millar, R.W. , Ballabio, A., Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D.J. (2016) Mid-Infrared Intersubband Absorption from P-Ge Quantum Wells on Si. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758421)

Gallacher, K. , Ballabio, A., Millar, R.W. , Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D. J. (2016) Intersubband Absorption in p-Ge QWs on Si. In: IEEE 13th International Conference on Group IV Photonics, Shanghai, China, 24-26 Aug 2016, pp. 30-31. ISBN 9781509019038 (doi: 10.1109/GROUP4.2016.7739130)

Gallacher, K. , Ballabio, A., Millar, R. , Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D. J. (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. ECS Transactions, 75(8), pp. 253-256. (doi: 10.1149/07508.0253ecst)

Millar, R. , Gallacher, K. , Frigerio, J., Ballabio, A., Bashir, A., MacLaren, I. , Isella, G. and Paul, D. J. (2016) Engineering large in-plane tensile strains in Ge microdisks, microrings and racetrack optical cavities. ECS Transactions, 75(8), pp. 633-640. (doi: 10.1149/07508.0633ecst)

Pezzoli, F. et al. (2016) Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates. Applied Physics Letters, 108, 262103. (doi: 10.1063/1.4955020)

Gallacher, K. et al. (2016) Ge-on-Si photonics for mid-infrared sensing applications. MRS Advances, 1(48), pp. 3269-3279. (doi: 10.1557/adv.2016.391)

Millar, R.W. , Gallacher, K. , Frigerio, J., Ballabio, A., Bashir, A., MacLaren, I. , Isella, G. and Paul, D.J. (2016) Analysis of Ge micro-cavities with in-plane tensile strains above 2%. Optics Express, 24(5), pp. 4365-4374. (doi: 10.1364/OE.24.004365)

Millar, R.W. , Gallacher, K. , Samarelli, A., Frigerio, J., Chrastina, D., Dieing, T., Isella, G. and Paul, D.J. (2016) Expanding the Ge emission wavelength to 2.25 μm with SixNy strain engineering. Thin Solid Films, 602, pp. 60-63. (doi: 10.1016/j.tsf.2015.07.017)

Gallacher, K. , Ballabio, A., Millar, R.W. , Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D.J. (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. Applied Physics Letters, 108(9), 091114. (doi: 10.1063/1.4943145)

2015

Millar, R.W. , Gallacher, K. , Samarelli, A., Frigerio, J., Chrastina, D., Isella, G., Dieing, T. and Paul, D.J. (2015) Extending the emission wavelength of Ge nanopillars to 2.25 μm using silicon nitride stressors. Optics Express, 23(14), pp. 18193-18202. (doi: 10.1364/OE.23.018193) (PMID:26191877)

Biagioni, P. et al. (2015) Group-IV midinfrared plasmonics. Journal of Nanophotonics, 9(1), 093789. (doi: 10.1117/1.JNP.9.093789)

Gallacher, K. et al. (2015) Mid-Infrared Intersubband Absorption in p-Ge/SiGe Quantum Wells Grown on Si. In: 2015 IEEE International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 15-16. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305931)

Millar, R.W. , Gallacher, K. , Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. (2015) Highly strained Ge on Si microdisks with silicon nitride stressors. In: 2015 IEEE 12th International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 65-66. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305948)

2014

Millar, R.W. , Gallacher, K. , Samarelli, A., Dumas, D.C.S., Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. (2014) Process Induced Tensile Strain of Ge on Si Nanopillars by ICP-PECVD SiN Stressor Layers. In: IEEE 11th International Conference on Group IV Photonics (GFP), Paris, France, 27-29 Aug 2014, pp. 235-236. (doi: 10.1109/Group4.2014.6961941)

Dumas, D.C.S., Gallacher, K. , Millar, R. , MacLaren, I. , Myronov, M., Leadley, D.R. and Paul, D.J. (2014) Silver antimony Ohmic contacts to moderately doped n-type germanium. Applied Physics Letters, 104(16), p. 162101. (doi: 10.1063/1.4873127)

2013

Velha, P., Dumas, D. C., Gallacher, K. , Millar, R. , Myronov, M., Leadley, D. R. and Paul, D. J. (2013) Strained Germanium Nanostructures on Silicon Emitting at >2.2 µm Wavelength. In: 2013 IEEE 10th International Conference on Group IV Photonics (GFP), Seoul, South Korea, 23-30 Aug 2013, pp. 142-143. ISBN 9781467358040 (doi: 10.1109/Group4.2013.6644411)

Articles

Smith, C. K. , McCarthy, C. and Millar, R. W. (2024) Simulation of photonic crystal enhanced Ge-on-Si single photon avalanche diodes. Optics Express, 32(22), pp. 38805-38818. (doi: 10.1364/OE.531687)

Fleming, F. et al. (2024) Surface-normal illuminated pseudo-planar Ge-on-Si avalanche photodiodes with high gain and low noise. Optics Express, 32(11), 19449. (doi: 10.1364/OE.521417)

Yi, X. et al. (2023) Afterpulsing in Ge-on-Si single-photon avalanche diodes. IEEE Photonics Technology Letters, 35(7), pp. 959-962. (doi: 10.1109/lpt.2023.3289653)

Thorburn, F., Yi, X., Greener, Z. M., Kirdoda, J. , Millar, R. W. , Huddleston, L. L., Paul, D. J. and Buller, G. S. (2021) Ge-on-Si single-photon avalanche diode detectors for short-wave infrared wavelengths. Journal of Physics: Photonics, 4, 012001. (doi: 10.1088/2515-7647/ac3839)

Ferre Llin, L. et al. (2020) High sensitivity Ge-on-Si single-photon avalanche diode detectors. Optics Letters, 45(23), pp. 6406-6409. (doi: 10.1364/OL.396756)

Gallacher, K. et al. (2020) Characterization of integrated waveguides by atomic-force-microscopy-assisted mid-infrared imaging and spectroscopy. Optics Express, 28(15), pp. 22186-22199. (doi: 10.1364/OE.393748)

Sinclair, M. , Gallacher, K. , Sorel, M. , Bayley, J. C., McBrearty, E. , Millar, R. W. , Hild, S. and Paul, D. J. (2020) 1.4 million Q factor Si₃N₄ micro-ring resonator at 780 nm wavelength for chip-scale atomic systems. Optics Express, 28(3), pp. 4010-4020. (doi: 10.1364/OE.381224)

Gallacher, K. , Millar, R. W. , Griskeviciute, U., Sinclair, M. , Sorel, M. , Baldassarre, L., Ortolani, M., Soref, R. and Paul, D. J. (2020) Ultra-broadband mid-infrared Ge-on-Si waveguide polarization rotator. APL Photonics, 5(2), 026102. (doi: 10.1063/1.5134973)

Griskeviciute, U., Millar, R. W. , Gallacher, K. , Valente, J. and Paul, D. J. (2020) Ge-on-Si waveguides for sensing in the molecular fingerprint regime. Optics Express, 28(4), pp. 5749-5757. (doi: 10.1364/OE.382356)

Kuzmenko, K. et al. (2020) 3D LIDAR imaging using Ge-on-Si single–photon avalanche diode detectors. Optics Express, 28(2), pp. 1330-1344. (doi: 10.1364/OE.383243)

Bashir, A., Millar, R. W. , Gallacher, K. , Paul, D. J. , Darbal, A. D., Stroud, R., Ballabio, A., Frigerio, J., Isella, G. and MacLaren, I. (2019) Strain analysis of Ge micro disk using precession electron diffraction. Journal of Applied Physics, 126, 235701. (doi: 10.1063/1.5113761)

Vines, P., Kuzmenko, K., Kirdoda, J. , Dumas, D. C.S., Mirza, M. M. , Millar, R. W. , Paul, D. J. and Buller, G. S. (2019) High performance planar germanium-on-silicon single-photon avalanche diode detectors. Nature Communications, 10, 1086. (doi: 10.1038/s41467-019-08830-w) (PMID:30842439) (PMCID:PMC6403241)

Gallacher, K. , Millar, R.W. , Griškevičiūte, U., Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D.J. (2018) Low loss Ge-on-Si waveguides operating in the 8–14 µm atmospheric transmission window. Optics Express, 26(20), pp. 25667-25675. (doi: 10.1364/OE.26.025667)

Bashir, A. et al. (2018) Interfacial sharpness and intermixing in a Ge-SiGe multiple quantum well structure. Journal of Applied Physics, 123(3), 035703. (doi: 10.1063/1.5001158)

Frigerio, J. et al. (2017) Optical properties of highly n-doped germanium obtained by in situ doping and laser annealing. Journal of Physics D: Applied Physics, 50(46), 465103. (doi: 10.1088/1361-6463/aa8eca)

Millar, R.W. , Dumas, D.C.S., Gallacher, K.F. , Jahandar, P., MacGregor, C., Myronov, M. and Paul, D.J. (2017) Mid-infrared light emission > 3 µm wavelength from tensile strained GeSn microdisks. Optics Express, 25(21), pp. 25374-25385. (doi: 10.1364/OE.25.025374) (PMID:29041205)

Gallacher, K. , Ballabio, A., Millar, R. , Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D. J. (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. ECS Transactions, 75(8), pp. 253-256. (doi: 10.1149/07508.0253ecst)

Millar, R. , Gallacher, K. , Frigerio, J., Ballabio, A., Bashir, A., MacLaren, I. , Isella, G. and Paul, D. J. (2016) Engineering large in-plane tensile strains in Ge microdisks, microrings and racetrack optical cavities. ECS Transactions, 75(8), pp. 633-640. (doi: 10.1149/07508.0633ecst)

Pezzoli, F. et al. (2016) Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates. Applied Physics Letters, 108, 262103. (doi: 10.1063/1.4955020)

Gallacher, K. et al. (2016) Ge-on-Si photonics for mid-infrared sensing applications. MRS Advances, 1(48), pp. 3269-3279. (doi: 10.1557/adv.2016.391)

Millar, R.W. , Gallacher, K. , Frigerio, J., Ballabio, A., Bashir, A., MacLaren, I. , Isella, G. and Paul, D.J. (2016) Analysis of Ge micro-cavities with in-plane tensile strains above 2%. Optics Express, 24(5), pp. 4365-4374. (doi: 10.1364/OE.24.004365)

Millar, R.W. , Gallacher, K. , Samarelli, A., Frigerio, J., Chrastina, D., Dieing, T., Isella, G. and Paul, D.J. (2016) Expanding the Ge emission wavelength to 2.25 μm with SixNy strain engineering. Thin Solid Films, 602, pp. 60-63. (doi: 10.1016/j.tsf.2015.07.017)

Gallacher, K. , Ballabio, A., Millar, R.W. , Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D.J. (2016) Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates. Applied Physics Letters, 108(9), 091114. (doi: 10.1063/1.4943145)

Millar, R.W. , Gallacher, K. , Samarelli, A., Frigerio, J., Chrastina, D., Isella, G., Dieing, T. and Paul, D.J. (2015) Extending the emission wavelength of Ge nanopillars to 2.25 μm using silicon nitride stressors. Optics Express, 23(14), pp. 18193-18202. (doi: 10.1364/OE.23.018193) (PMID:26191877)

Biagioni, P. et al. (2015) Group-IV midinfrared plasmonics. Journal of Nanophotonics, 9(1), 093789. (doi: 10.1117/1.JNP.9.093789)

Dumas, D.C.S., Gallacher, K. , Millar, R. , MacLaren, I. , Myronov, M., Leadley, D.R. and Paul, D.J. (2014) Silver antimony Ohmic contacts to moderately doped n-type germanium. Applied Physics Letters, 104(16), p. 162101. (doi: 10.1063/1.4873127)

Conference or Workshop Item

Gallacher, K. , Sinclair, M. , Millar, R.W. , Sharp, O., Mirando, F., Ternent, G., Mills, G., Casey, B. and Paul, D.J. (2019) Integrated DFB Lasers on Si3N4 Photonic Platform for Chip-Scale Atomic Systems. CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STu4O.7)

Kirdoda, J. , Ferre Llin, L., Kuzmenko, K., Vines, P., Greener, Z., Dumas, D.C.S., Millar, R. , Mirza, M.M. , Buller, G.S. and Paul, D.J. (2019) High Efficiency Planar Ge-on-Si Single-Photon Avalanche Diode Detectors. CLEO: QELS_Fundamental Science 2019, San Jose, CA, USA, 05-10 May 2019. ISBN 9781943580576

Kuzmenko, K. et al. (2019) Planar Geometry Ge-on-Si SPAD Detectors for the Short-wave Infrared. Advanced Photon Counting Techniques XIII, Baltimore, MD, USA, 14-18 Apr 2019. p. 24. ISBN 9781510626218 (doi: 10.1117/12.2518858)

Kirdoda, J. , Dumas, D., Vines, P., Kuzmenko, K., Millar, R.W. , Buller, G.S. and Paul, D.J. (2018) Ge on Si Single Photon Avalanche Detectors for Lidar Applications. SPIE Security + Defence 2018, Berlin, Germany, 10-13 Sep 2018.

Ghisetti, E. A., Dumas, D., Kirdoda, J. , Gallacher, K. , Millar, R. W. , Mirza, M. M.A. and Paul, D. J. (2018) Germanium on Silicon Single Photon Avalanche Detectors Using Silicon-on-Insulator Substrates. Integrated Optics: Devices, Materials, and Technologies XXII, San Francisco, CA, USA, 29 Jan - 01 Feb 2018. (doi: 10.1117/12.2290403)

Conference Proceedings

McCarthy, C. , Smith, C. , Mowbray, H., Paul, D. and Millar, R. (2024) Ge-on-Si Single Photon Avalanche Diode Performance Enhancement with Photonic Crystal Nano-hole Arrays. In: SPIE OPTO 2024, San Francisco, California, USA, 27 Jan-01 Feb 2024, (doi: 10.1117/12.3001610)

Dumas, D. et al. (2024) Decoupling the dark count rate contributions in Ge-on-Si single photon avalanche diodes. In: SPIE OPTO 2024, San Francisco, California, USA, 27 Jan-01 Feb 2024, (doi: 10.1117/12.3001450)

Coughlan, C., Mirza, M.M. , Kirdoda, J. , Dumas, D., Smith, C., McCarthy, C. , Millar, R.W. and Paul, D.J. (2023) Effect of Passivation on Selectively Grown Sub-µm Ge-on-Si Single Photon Avalanche Diode Detectors. In: 2023 IEEE Silicon Photonics Conference (SiPhotonics), Arlington, VA, USA, 04-07 Apr 2023, ISBN 9781665486552 (doi: 10.1109/SiPhotonics55903.2023.10141911)

Coughlan, C., Mirza, M. M.A. , Kirdoda, J. , Dumas, D., Smith, C., McCarthy, C. , Mowbray, H., Watson, S. , Millar, R. and Paul, D. J. (2023) Variation of Sidewall Passivation on Sub-um Selectively Grown Ge-on-Si Devices Towards Single Photon Avalanche Detectors. In: SPIE OPTO 2023, San Francisco, CA, USA, 28 Jan-3 Feb 2023, 124170M. ISBN 9781510659391 (doi: 10.1117/12.2665493)

Smith, C. et al. (2023) Simulation and Design Optimization of Germanium-on-Silicon Single Photon Avalanche Diodes. In: SPIE OPTO 2023, San Francisco, CA, USA, 28 Jan-3 Feb 2023, 124260S. ISBN 9781510659575 (doi: 10.1117/12.2650154)

Millar, R. W. et al. (2021) Pseudo-planar Ge-on-Si Single-photon Avalanche Diode Detector with Record Low Noise-equivalent Power. In: SPIE PHOTONEX, Glasgow, UK, 28 Sep - 01 Oct 2021, (doi: 10.1117/12.2599033)

Millar, R. W. et al. (2021) Ge-on-Si Single-Photon Avalanche Diode Detectors with Low Noise Equivalent Power in the Short-Wave Infrared. In: 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 21-25 June 2021, ISBN 9781665418768 (doi: 10.1109/CLEO/Europe-EQEC52157.2021.9542785)

Gallacher, K. , Grickeviciute, U., Millar, R. W. and Paul, D. J. (2021) Ge on Si Photonics Platform for Mid-Infrared Sensors. In: 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Cabo San Lucas, Mexico, 19-21 July 2021, ISBN 9781665416009 (doi: 10.1109/SUM48717.2021.9505799)

Frigerio, J. et al. (2021) Ge-on-Si Based Mid-infrared Plasmonics. In: Silicon Photonics XVI, 06-12 Mar 2021, 116910M. (doi: 10.1117/12.2576175)

Gallacher, K. , Millar, R. W. , Griskeviciute, U., Sinclair, M. , Sorel, M. , Baldassarre, L., Ortolani, M., Soref, R. and Paul, D. J. (2020) Ge-on-Si Waveguide Polarization Rotator Operating in the 8-14 µm Atmospheric Transmission Window. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STh4L.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STh4L.8)

Millar, R. W. et al. (2020) Ge-on-Si Single Photon Avalanche Diode Detectors for LIDAR in the Short Wave Infrared. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, AF2I.6. ISBN 9781943580767 (doi: 10.1364/CLEO_AT.2020.AF2I.6)

Sinclair, M. , Gallacher, K. , Sorel, M. , Bayley, J. C. , McBrearty, E. , Millar, R. W. , Hild, S. and Paul, D. J. (2020) 1.4 Million Q-Factor 780 nm Wavelength Si3N4 Micro-rings for Chip-Scale Atomic Systems. In: CLEO: Applications and Technology 2020, Washington, DC, USA, 10-15 May 2020, STu4O.8. ISBN 9781943580767 (doi: 10.1364/CLEO_SI.2020.STu4O.8)

Gallacher, K. , Millar, R. W. , Griskeviciute, U., Sinclair, M. , Sorel, M. , Baldassarre, L., Ortolani, M., Soref, R. and Paul, D. J. (2020) Ge-on-Si Mid-Infrared Waveguide Platform for Molecular Fingerprint Sensing. In: 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 19-23 July 2020, ISBN 9781728184241 (doi: 10.1109/ICTON51198.2020.9203237)

Thorburn, F. E. et al. (2020) High Efficiency Planar Geometry Germanium-on-silicon Single-photon Avalanche Diode Detectors. In: Advanced Photon Counting Techniques XIV, 27 Apr - 08 May 2020, 113860N. ISBN 9781510635494 (doi: 10.1117/12.2559620)

Kirdoda, J. , Dumas, D. C.S., Millar, R. W. , Mirza, M. M. , Paul, D. J. , Kuzmenko, K., Vines, P., Greener, Z. and Buller, G. S. (2020) Geiger Mode Ge-on-Si Single-Photon Avalanche Diode Detectors. In: 2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP), London, UK, 11-13 Dec 2019, ISBN 9781728149486 (doi: 10.1109/BICOP48819.2019.9059574)

Dumas, D. C.S., Kirdoda, J. , Vines, P., Kuzmenko, K., Millar, R. W. , Buller, G. S. and Paul, D. J. (2019) Ge-On-Si High Efficiency Spads at 1310 Nm. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8873357)

Sinclair, M. et al. (2019) High-Q Si3N4 Ring Resonators for Locking 780nm GaAs-Based Distributed Feedback Laser. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8872725)

Gallacher, K. , Griskeviciute, U., Millar, R. W. and Paul, D. J. (2019) Ultra Broadband Mid-Infrared Ge-on-Si Polarization Rotator. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853922)

Griskeviciute, U., Gallacher, K. , Millar, R. W. , Paul, D. J. and MacGilp, I. (2019) Understanding the Sidewall Dependence of Loss for Ge-on-Si Waveguides in the Mid-Infrared. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853945)

Kirdoda, J. , Dumas, D. C.S., Kuzmenko, K., Vines, P., Greener, Z. M., Millar, R. W. , Mirza, M. M. , Buller, G. S. and Paul, D. J. (2019) Geiger Mode Ge-on-Si Single-Photon Avalanche Diode Detectors. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853918)

Millar, R.W. , Griskeviciute, U., Gallacher, K. , Sorel, M. , Paul, D.J. , Baldassarre, L. and Ortolani, M. (2019) Molecular Fingerprint Sensing Using Ge-on-Si Waveguides. In: 2019 IEEE 16th International Conference on Group IV Photonics (GFP), Singapore, 28-30 Aug 2019, ISBN 9781728109053 (doi: 10.1109/GROUP4.2019.8853881)

Griškevičiūtė, U., Millar, R.W. , Gallacher, K. , Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D.J. (2019) Fingerprint Mid-Infrared Sensing With Germanium on Silicon Waveguides. In: CLEO: Science and Innovations 2019, San Jose, CA, USA, 05-10 May 2019, ISBN 9781943580576 (doi: 10.1364/CLEO_SI.2019.STh1N.2)

Millar, R. W. , Gallacher, K. , Griskeviciute, U., Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D. J. (2019) Low Loss Germanium-on-Silicon Waveguides for Integrated Mid-Infrared Photonics. In: SPIE OPTO 2019, San Francisco, CA, USA, 02-07 Feb 2019, 109230S. (doi: 10.1117/12.2510009)

Dumas, D. C.S., Kirdoda, J. , Millar, R. W. , Vines, P., Kuzmenko, K., Buller, G. S. and Paul, D. J. (2019) High-Efficiency Ge-on-Si SPADs for Short-Wave Infrared. In: SPIE Photonics West, San Francisco, CA, USA, 02-07 Feb 2019, p. 1091424. (doi: 10.1117/12.2521067)

Gallacher, K. , Millar, R. W. , Griskevivuite, U., Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D. J. (2019) TuA4.1 - Mid-infrared Sensing with Ge on Si Waveguides (Invited). In: 2019 IEEE Photonics Society Summer Topical Meeting Series (SUM), Ft. Lauderdale, FL, USA, 08-10 Jul 2019, ISBN 9781728105970 (doi: 10.1109/PHOSST.2019.8795039)

Millar, R.W. , Griskevicuite, U., Gallacher, K. , Baldassarre, L., Sorel, M. , Ortolani, M. and Paul, D.J. (2019) Towards a Mid-Infrared Lab-on-Chip Sensor using Ge-on-Si Waveguides. In: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 23-27 Jun 2019, ISBN 9781728104690 (doi: 10.1109/CLEOE-EQEC.2019.8871521)

Gallacher, K. et al. (2018) Components for Integrated Ge on Si for Mid-Infrared Photonic Sensors. In: 2018 IEEE Photonics Society Summer Topical Meeting Series (SUM), Waikoloa Village, HI, USA, 09-11 Jul 2018, pp. 177-178. ISBN 9781538653432 (doi: 10.1109/PHOSST.2018.8456761)

Gallacher, K. , Millar, R. W. , Paul, D. J. , Mirando, F., Ternent, G., Mills, G. and Casey, B. (2018) Distributed Feedback Lasers Operating at 780 nm Wavelength Integrated on Si Substrates for Chip-scale Atomic Systems. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 67-68. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478720)

Millar, R.W. , Gallacher, K. , Griskeviciute, U., Paul, D.J. , Baldassarre, L. and Ortolani, M. (2018) Ge-on-Si Mid-Infrared Waveguides Operating up to 11 μm Wavelength. In: 2018 IEEE 15th International Conference on Group IV Photonics (GFP), Cancun, Mexico, 29-31 Aug 2018, pp. 137-138. ISBN 9781538653616 (doi: 10.1109/GROUP4.2018.8478757)

Millar, R.W. , Dumas, D.C.S., Gallacher, K. , Jahandar, P., Myronov, M. and Paul, D.J. (2017) Tensile Strained GeSn Mid-Infrared Light Emitters. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 49-50. ISBN 9781509065677 (doi: 10.1109/GROUP4.2017.8082190)

Paul, D. J. et al. (2017) n-Ge on Si for Mid-Infrared Plasmonic Sensors. In: IEEE Photonics Society Summer Topical Meeting Series (SUM 2017), San Juan, Puerto Rico, 10-12 Jul 2017, pp. 125-126. ISBN 9781509065714 (doi: 10.1109/PHOSST.2017.8012682)

Gallacher, K. et al. (2017) Germanium-on-silicon Waveguides for Mid-infrared Photonic Sensing Chips. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 63-64. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082197)

Gallacher, K. et al. (2017) Mid-infrared n-Ge on Si Plasmonic Based Microbolometer Sensors. In: 2017 IEEE 14th International Conference on Group IV Photonics (GFP), Berlin, Germany, 23-25 Aug 2017, pp. 3-4. ISBN 9781509065684 (doi: 10.1109/GROUP4.2017.8082167)

Gallacher, K. , Millar, R.W. , Ballabio, A., Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D.J. (2016) Mid-Infrared Intersubband Absorption from P-Ge Quantum Wells on Si. In: 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016), Copenhagen, Denmark, 25-30 Sept 2016, ISBN 9781467384858 (doi: 10.1109/IRMMW-THz.2016.7758421)

Gallacher, K. , Ballabio, A., Millar, R.W. , Frigerio, J., Bashir, A., MacLaren, I. , Isella, G., Ortolani, M. and Paul, D. J. (2016) Intersubband Absorption in p-Ge QWs on Si. In: IEEE 13th International Conference on Group IV Photonics, Shanghai, China, 24-26 Aug 2016, pp. 30-31. ISBN 9781509019038 (doi: 10.1109/GROUP4.2016.7739130)

Gallacher, K. et al. (2015) Mid-Infrared Intersubband Absorption in p-Ge/SiGe Quantum Wells Grown on Si. In: 2015 IEEE International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 15-16. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305931)

Millar, R.W. , Gallacher, K. , Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. (2015) Highly strained Ge on Si microdisks with silicon nitride stressors. In: 2015 IEEE 12th International Conference on Group IV Photonics (GFP), Vancouver, Canada, 26-28 Aug 2015, pp. 65-66. ISBN 9781479982547 (doi: 10.1109/group4.2015.7305948)

Millar, R.W. , Gallacher, K. , Samarelli, A., Dumas, D.C.S., Frigerio, J., Chrastina, D., Isella, G. and Paul, D.J. (2014) Process Induced Tensile Strain of Ge on Si Nanopillars by ICP-PECVD SiN Stressor Layers. In: IEEE 11th International Conference on Group IV Photonics (GFP), Paris, France, 27-29 Aug 2014, pp. 235-236. (doi: 10.1109/Group4.2014.6961941)

Velha, P., Dumas, D. C., Gallacher, K. , Millar, R. , Myronov, M., Leadley, D. R. and Paul, D. J. (2013) Strained Germanium Nanostructures on Silicon Emitting at >2.2 µm Wavelength. In: 2013 IEEE 10th International Conference on Group IV Photonics (GFP), Seoul, South Korea, 23-30 Aug 2013, pp. 142-143. ISBN 9781467358040 (doi: 10.1109/Group4.2013.6644411)

Patents

The University Court Of The University of Glasgow. Heriot-Watt University (2020) Single photon avalanche detector, method for use therefore and for its manufacture. .