Dr Kristian Groom
PhD, MPhys
School of Electrical and Electronic Engineering
Senior Lecturer
Semiconductor Materials and Devices Research Group
+44 114 222 5822
Full contact details
School of Electrical and Electronic Engineering
- Profile
-
I graduated with a MPhys (1999) and a PhD (2003) both from the Dept. of Physics at 91Ö±²¥. My thesis detailed research into the carrier processes and dynamics in quantum dot lasers.
I joined the EEE Dept in 2003 initially as a postdoctoral researcher investigating quantum dot lasers for telecommunications applications as part of a European project, but soon became involved in developing device fabrication capabilities for a broad range of additional projects including quantum cascade lasers, InP photodiodes, and single photon devices.
In 2005 I was awarded a Royal Academy of Engineering Research Fellowship for research into advanced semiconductor laser engineering, focusing on regrowth technologies for GaAs, including buried self-aligned stripe and distributed feedback (ie. single frequency) lasers, which provided a potential platform for GaAs photonic integration and next generation vertically-emitting lasers.
At the same time, a burgeoning interest in biophotonics research drew me in to investigate GaAs based superluminescent diodes as low coherence light sources for application in optical coherence tomography.
Following the end of my Fellowship I was appointed as Lecturer in 2010, moving to Senior Lecturer in 2012.
My research continues to focus on semiconductor optoelectronic component design and manufacture, with an interest in photonic integration and in the application of near- and mid-IR semiconductor lasers, superluminescent diodes, amplifiers, detectors and passive optical elements for application in high value manufacturing methodologies, such as in additive manufacturing and embeddable metrology.
I am currently working on projects to develop capability for the heterogeneous integration of III-V semiconductor components and circuits upon a range of substrates to enable new sensor technologies, both through the collaborative EPSRC Heteroprint project and via the EPSRC Future Photonics Hub.
At the same time, I am pursuing research into the application of laser diode arrays for efficient high-speed additive manufacturing of both metallic and polymer parts.
- Research interests
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- Optoelectronic device manufacture using novel fabrication strategies
- Additive manufacturing using semiconductor laser arrays
- Semiconductor lasers, superluminescent diodes, optical amplifiers and photodiodes
- Semiconductor quantum dots
- Mid-infrared quantum cascade lasers
- Photonic device engineering for application in metrology and biomedical imaging systems
- Publications
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Journal articles
- . Materials & Design, 248, 113511-113511.
- . Journal of Materials Processing Technology.
- . EPJ Web of Conferences, 266, 01008-01008.
- . Materials & Design, 215, 110518-110518.
- . Applied Physics Letters, 117(6), 061106-061106.
- . The International Journal of Advanced Manufacturing Technology, 97(1-4), 1383-1396.
- . The International Journal of Advanced Manufacturing Technology.
- . IEEE Journal of Selected Topics in Quantum Electronics, 23(6), 1-11.
- . Materials and Design, 117, 305-315.
- . Semiconductor Science and Technology, 31(8), 085001-085001.
- . SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 31(4).
- . MATERIALS & DESIGN, 88, 837-846.
- . IEEE Journal on Selected Topics in Quantum Electronics, 19(4).
- . IEEE Photonics Technology Letters, 24(11), 966-968.
- . Japanese Journal of Applied Physics, 51(2S), 02BG05-02BG05.
- . APPLIED PHYSICS LETTERS, 100(5).
- Optimisation of coupling between photonic crystal and active elements in an epitaxially regrown GaAs based photonic crystal surface emitting laser. Japanese Journal of Applied Physics, 51(2 PART 2).
- The effect of growth temperature of GaAs nucleation layer on InAs/GaAs quantum dots monolithically grown on Ge substrates. Applied Physics Letters, 100(5).
- . PHYS REV B, 83(20).
- . ELECTRON LETT, 46(15), 1076-U51.
- . IEEE Journal on Selected Topics in Quantum Electronics, 16(4), 748-754.
- . IEEE Journal on Selected Topics in Quantum Electronics, 16(4), 1015-1022.
- Flat-topped emission centred at 1 250 nm from quantum dot superluminescent diodes. S AFR J SCI, 105(7-8), 276-277.
- . IEEE J SEL TOP QUANT, 15(3), 757-763.
- . IEEE J SEL TOP QUANT, 15(3), 819-827.
- . IET OPTOELECTRONICS, 3(2), 100-104.
- . JAPANESE JOURNAL OF APPLIED PHYSICS, 48(4).
- . MICROELECTRONICS JOURNAL, 40(3), 588-591.
- . ELECTRON LETT, 44(15), 905-907.
- . JAPANESE JOURNAL OF APPLIED PHYSICS, 47(4), 2965-2967.
- . J APPL PHYS, 103(1).
- . IEEE J QUANTUM ELECT, 43(11-12), 1129-1139.
- . APPL PHYS LETT, 91(12).
- . IEEE J SEL TOP QUANT, 13(5), 1267-1272.
- . APPL PHYS LETT, 91(8).
- . PHYS REV B, 76(8).
- . ELECTRON LETT, 43(12), 670-672.
- . ELECTRON LETT, 43(10), 587-589.
- . JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 46(4B), 2424-2428.
- . JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 46(4B), 2418-2420.
- . JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 46(4B), 2421-2423.
- . APPL PHYS LETT, 90(11).
- Photon coupling mechanism in 1.3-μm quantum-dot lasers. Optics InfoBase Conference Papers.
- Photon coupling mechanism in 1.3-μm quantum-dot lasers. Optics InfoBase Conference Papers.
- Systematic study of the effects of δ-p-doping on 1.3μm dot-in-well lasers. Optics InfoBase Conference Papers.
- Photon coupling mechanism in 1.3-μm quantum-dot lasers. Optics InfoBase Conference Papers.
- . IEEE PHOTONIC TECH L, 19(2-4), 109-111.
- . PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 244(1), 82-86.
- . J APPL PHYS, 100(10).
- . APPL PHYS LETT, 89(20).
- . IEEE J QUANTUM ELECT, 42(11-12), 1259-1265.
- . APPL PHYS LETT, 89(7).
- . ELECTRON LETT, 42(16), 922-923.
- . JPN J APPL PHYS 1, 45(4A), 2542-2545.
- . APPL PHYS LETT, 88(12).
- . IEEE J QUANTUM ELECT, 42(3-4), 397-403.
- . APPL PHYS LETT, 88(8).
- Mid-infrared optical coherence tomography: Application in tissue engineering. Optics InfoBase Conference Papers.
- . SEMICOND SCI TECH, 21(1), L1-L5.
- . IEEE PHOTONIC TECH L, 18(1-4), 58-60.
- . PHYS REV B, 72(11).
- . IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 11(5), 1041-1047.
- . IEEE PHOTONIC TECH L, 17(9), 1785-1787.
- . IEEE PHOTONIC TECH L, 17(6), 1139-1141.
- . APPL PHYS LETT, 86(14).
- . JPN J APPL PHYS 1, 44(4B), 2520-2522.
- . Device Research Conference - Conference Digest, DRC, 2005, 71-72.
- . PHYS REV B, 70(19).
- . ELECTRON LETT, 40(22), 1412-1413.
- . APPL PHYS LETT, 85(12), 2226-2228.
- . Extended Abstracts of the 2004 International Conference on Solid State Devices and Materials.
- . J APPL PHYS, 96(4), 1988-1992.
- . APPL PHYS LETT, 85(5), 704-706.
- . Phys Rev Lett, 93(5), 057401.
- . APPL PHYS LETT, 81(22), 4118-4120.
- . APPL PHYS LETT, 81(1), 1-3.
- Staircase-like dynamics of stimulated emission in InAs quantum dot amplifiers. Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series, 74, 178-179.
- . IEE P-OPTOELECTRON, 148(5-6), 238-242.
- Electrically pumped InGaAs quantum dot ring and cylindrical cavity lasers. ELECTRON LETT, 37(20), 1220-1222.
- Optical spectroscopic study of carrier processes in self-assembled In(Ga)As-Ga(Al)As quantum dot lasers. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 224(1), 123-127.
- Design, fabrication and characterisation of InGaAs/InP single-photon avalanche diode detectors.
- . The International Journal of Advanced Manufacturing Technology.
Conference proceedings papers
- . Smart Photonic and Optoelectronic Integrated Circuits 2024, 27 January 2024 - 1 February 2024.
- . 2023 23rd International Conference on Transparent Optical Networks (ICTON), 2 July 2023 - 6 July 2023.
- . Silicon Photonics XVIII, 28 January 2023 - 3 March 2023.
- . Integrated Optics: Devices, Materials, and Technologies XXVI, 22 January 2022 - 28 February 2022.
- . SPIE Photonex Industry Talks, 5 October 2020 - 9 October 2020.
- High-power gaas-based superluminescent diodes employing window-like facets for low spectral modulation. Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015
- . Biophotonics: Photonic Solutions for Better Health Care VI, 22 April 2018 - 26 April 2018.
- . Gallium Nitride Materials and Devices XII
- . Laser 3D Manufacturing III
- . Novel In-Plane Semiconductor Lasers XV
- . Novel In-Plane Semiconductor Lasers XV
- . Biomedical Vibrational Spectroscopy 2016: Advances in Research and Industry, 13 February 2016 - 18 February 2016.
- . High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management, 13 February 2016 - 18 February 2016.
- High-power gaas-based superluminescent diodes employing window-like facets for low spectral modulation. Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015
- High-power gaAs-based superluminescent diodes employing window-like facets for low spectral modulation. Optics InfoBase Conference Papers
- . 2014 International Semiconductor Laser Conference, 7 September 2014 - 10 September 2014.
- . 2014 International Semiconductor Laser Conference, 7 September 2014 - 10 September 2014.
- High-power gaAs-based superluminescent diodes employing window-like facets for low spectral modulation. Optics InfoBase Conference Papers
- . 2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014) (pp 175-176)
- . 2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014) (pp 213-214)
- . Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest
- . Conference Digest - IEEE International Semiconductor Laser Conference (pp 167-168)
- . Proceedings of SPIE - The International Society for Optical Engineering, Vol. 8255
- . IEEE Photonic Society 24th Annual Meeting, PHO 2011 (pp 705-706)
- Epitaxially regrown GaAs based photonic crystal surface emitting laser. IEEE Photonic Society 24th Annual Meeting, PHO 2011 (pp 705-706)
- . 2010 Photonics Global Conference, PGC 2010
- . Proceedings of SPIE - The International Society for Optical Engineering, Vol. 7616
- . Proceedings of SPIE - The International Society for Optical Engineering, Vol. 7616
- Buried inGaP/GaAs grating Distributed Feedback laser with AlGaAs cladding. Optics InfoBase Conference Papers
- . CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 14 June 2009 - 19 June 2009.
- GaAs Based Quantum Dot Superluminescent Diodes for Optical Coherence Tomography of Skin Tissue. 2009 4TH INTERNATIONAL CONFERENCE ON COMPUTERS AND DEVICES FOR COMMUNICATION (CODEC 2009) (pp 426-431)
- A Platform for GaAs Opto-Electronic Integrated Circuits Based on GaAs/AlGaAs Overgrowth of Patterned InGaP. 2009 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1AND 2 (pp 213-214)
- Broad-band High Power Quantum Dot Superluminescent Diodes. 2009 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1AND 2 (pp 604-605)
- Optical coherence tomography with high power quantum-dot superluminescent diodes. 2009 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1AND 2 (pp 207-208)
- . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
- . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
- . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
- . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
- GaAs-based buried heterostructure laser incorporating an InGaP opto-electronic confinement layer. Optics InfoBase Conference Papers
- GaAs-based buried heterostructure laser incorporating an InGaP opto-electronic confinement layer. Optics InfoBase Conference Papers
- . 2008 IEEE PhotonicsGlobal at Singapore, IPGC 2008
- . Proceedings of SPIE - The International Society for Optical Engineering, Vol. 6909
- . 2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS
- Multi-Contact Quantum Dot Superluminescent Diodes for Optical Coherence Tomography. 2008 IEEE PHOTONICSGLOBAL@SINGAPORE (IPGC), VOLS 1 AND 2 (pp 104-106)
- Tuning and Modulation in Two Section Quantum Dot Lasers. 2008 IEEE PHOTONICSGLOBAL@SINGAPORE (IPGC), VOLS 1 AND 2 (pp 93-96)
- 1.3 mu m Quantum Dot Self-Aligned Stripe Laser. 2008 IEEE PHOTONICSGLOBAL@SINGAPORE (IPGC), VOLS 1 AND 2 (pp 97-100)
- Two Section Quantum Dot Devices for Tuning and Modulation. 2008 IEEE 21ST INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (pp 109-110)
- GaAs-Based Buried Heterostructure Laser Incorporating an InGaP Opto-Electronic Confinement Layer. 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9 (pp 2177-2178)
- GaAs-Based Self-Aligned Laser Incorporating an InGaP Opto-Electronic Confinement Layer. 2008 IEEE 21ST INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (pp 97-98)
- Multi-Contact Quantum Dot Superluminescent Diodes for Optical Coherence Tomography. 2008 IEEE 21ST INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (pp 107-108)
- . Conference on Lasers and Electro-Optics, 2007, CLEO 2007
- . AIP Conference Proceedings, Vol. 893 (pp 909-910)
- . Conference on Lasers and Electro-Optics Europe - Technical Digest
- . Proceedings of SPIE - The International Society for Optical Engineering, Vol. 6603
- Photon Coupling Mechanism in 1.3-mu m Quantum-Dot Lasers. 2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5 (pp 2340-2341)
- Growth and characterization of multi-layer 1.3 mu m quantum dot lasers. INTERNATIONAL JOURNAL OF NANOSCIENCE, VOL 6, NOS 3 AND 4, Vol. 6(3-4) (pp 291-296)
- Systematic study of the effects of modulation p-doping on 1.3 mu m InAs/GaAs dot-in-well lasers. 2007 International Conference on Indium Phosphide and Related Materials, Conference Proceedings (pp 517-520)
- Quantum dot superluminescent diodes - Bandwidth engineering and epitaxy for high powers. 2007 International Conference on Indium Phosphide and Related Materials, Conference Proceedings (pp 289-292)
- . IEE PROCEEDINGS-OPTOELECTRONICS, Vol. 153(6) (pp 280-283)
- . Extended Abstracts of the 2006 International Conference on Solid State Devices and Materials, 12 September 2006 - 15 September 2006.
- . PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Vol. 32(1-2) (pp 97-100)
- Design, fabrication and characterisation of InGaAs/InP single-photon avalanche diode detectors. Optics InfoBase Conference Papers
- . Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006
- . Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006
- . Conference Digest - IEEE International Semiconductor Laser Conference (pp 47-48)
- . Conference Digest - IEEE International Semiconductor Laser Conference (pp 61-62)
- . Semiconductor Lasers and Laser Dynamics II, Vol. 6184 (pp 18417-18417)
- . Quantum Dots, Particles, and Nanoclusters III, Vol. 6129 (pp 12907-12907)
- . MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, Vol. 25(5-8) (pp 779-783)
- . PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Vol. 26(1-4) (pp 129-132)
- . PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Vol. 26(1-4) (pp 382-385)
- Effect of gain saturation and nonradiative recombination on the thermal characteristics of InAs/GaAs 1.3 mu m quantum dot lasers. 2005 IEEE LEOS Annual Meeting Conference Proceedings (LEOS) (pp 401-402)
- . Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, Vol. 2005 (pp 402-403)
- Growth and characterization of 1.3 mu m multi-layer quantum dots lasers incorporating high growth temperature spacer layers. Physics of Semiconductors, Pts A and B, Vol. 772 (pp 1547-1548)
- . Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies, 2004.
- Long-lived spin coherence and temperature-induced dephasing in InAs quantum dots measured via quantum beats. OSA Trends in Optics and Photonics Series, Vol. 97 (pp 667-668)
- Recombination and loss mechanisms in low-threshold InAs/GaAs 1.3 μm quantum dot lasers. Conference Digest - IEEE International Semiconductor Laser Conference (pp 57-58)
- . ULTRAFAST PHENOMENA IN SEMICONDUCTORS AND NANOSTRUCTURE MATERIALS VIII, Vol. 5352 (pp 348-354)
Patents
- Semiconductor light source and method of fabrication thereof. GB2471266 (national/regional). Appl. 29 Dec 2010.
Preprints
- Teaching activities
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- EEE118 Electronic Devices & Circuits
- EEE6214 Packaging & Reliability of Microsystems
- Professional activities and memberships
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- Senior Lecturer
- TUoS Manufacturing Research Board member
- EEE Estates Committee member
- Nanoscience Management Committee member
- Research students
Student Degree Status Primary/Secondary Ghazal O M S PhD Graduated Primary Greenwood P D L
PhD Graduated Primary Lei H PhD Graduated Primary Peyvast N PhD Graduated Primary
Jin Xiao PhD Graduated Secondary Li Wei PhD Graduated Secondary Qian H PhD Graduated Secondary Stevens B J PhD Graduated Secondary Zavala Arredondo M A PhD Graduated Secondary