Dr Kristian Groom

PhD, MPhys

School of Electrical and Electronic Engineering

Senior Lecturer

Headshot of Kris Groom
Profile picture of Headshot of Kris Groom
k.m.groom@sheffield.ac.uk
+44 114 222 5822

Full contact details

Dr Kristian Groom
School of Electrical and Electronic Engineering
Profile

I graduated with a MPhys (1999) and a PhD (2003) both from the Dept. of Physics at The University of Sheffield. 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
  • 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

Journal articles

  • Erman SC, Aydin A, Groom K & Mumtaz K (2025) . The International Journal of Advanced Manufacturing Technology, 136, 4471-4490.
  • Alimi Y, Guilhabert B, Jevtics D, Sala EM, Strain MJ, Groom KM & Heffernan J (2025) . Semiconductor Science and Technology, 40(1).
  • Caglar H, Aydin A, Gulenc IT, Groom K & Mumtaz K (2024) . Materials & Design, 248.
  • CAGLAR H, LIANG A, GROOM K & MUMTAZ K (2024) . Journal of Materials Processing Technology.
  • Mitchell CJ, Osman A, Li K, Penadés JS, Nedeljkovic M, Zhou L, Groom KM, Heffernan J & Mashanovich G (2022) . EPJ Web of Conferences, 266, 01008-01008.
  • Alsaddah M, Khan A, Groom K & Mumtaz K (2022) . Materials and Design, 215.
  • Alsaddah M, Khan A, Groom K & Mumtaz K (2021) . The International Journal of Advanced Manufacturing Technology, 113(9-10), 2461-2480.
  • Goldberg GR, Kim D-H, Taylor RJE, Childs DTD, Ivanov P, Ozaki N, Kennedy KL, Groom KM, Harada Y & Hogg RA (2020) . Applied Physics Letters, 117(6).
  • Zavala-Arredondo M, Ali H, Groom KM & Mumtaz KA (2018) . International Journal of Advanced Manufacturing Technology, 97(1-4), 1383-1396.
  • Zavala-Arredondo M, Groom KM & Mumtaz KA (2018) . The International Journal of Advanced Manufacturing Technology, 94, 2563-2576.
  • Goldberg GR, Boldin A, Andersson S, Ivanov P, Ozaki N, Taylor RJE, Childs DTD, Groom KM, Kennedy KL & Hogg RA (2017) . IEEE Journal of Selected Topics in Quantum Electronics, 23(6).
  • Zavala-Arredondo M, Boone N, Willmott J, Childs DTD, Ivanov P, Groom KM & Mumtaz K (2017) . Materials and Design, 117, 305-315.
  • Groom KM, Lei H, Stevens BJ, Fry PW, Babazadeh N, Ternent G, Childs DT & Groom KM (2016) . Semiconductor Science and Technology, 31(8).
  • Ghazal OMS, Childs DT, Stevens BJ, Babazadeh N, Hogg RA & Groom KM (2016) . SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 31(4).
  • Guan G, Hirsch M, Lu ZH, Childs DTD, Matcher SJ, Goodridge R, Groom KM & Clare AT (2015) . MATERIALS & DESIGN, 88, 837-846.
  • Taylor RJE, Williams DM, Childs DTD, Stevens BJ, Shepherd LR, Khamas S, Groom KM, Hogg RA, Ikeda N & Sugimoto Y (2013) . IEEE Journal on Selected Topics in Quantum Electronics, 19(4).
  • Williams DM, Groom KM, Stevens BJ, Childs DTD, Taylor RJE, Khamas S, Hogg RA, Ikeda N & Sugimoto Y (2012) . Japanese Journal of Applied Physics, 51(2S), 02BG05-02BG05.
  • Williams, DM , Groom KM, stevens, bj , childs, dtd , taylor, rj , khamas, s , hogg, r , ikeda, n & sugimoto, y (2012) . IEEE Photonics Technology Letters, 24(11), 966-968.
  • Williams DM, Groom KM, Stevens BJ, Childs DTD, Taylor RJE, Khamas S, Hogg RA, Ikeda N & Sugimoto Y (2012) 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).
  • Wang T, Lee A, Tutu F, Seeds A, Liu H, Jiang Q, Groom K & Hogg R (2012) . APPLIED PHYSICS LETTERS, 100(5).
  • Wang T, Lee A, Tutu F, Seeds A, Liu H, Jiang Q, Groom K & Hogg R (2012) The effect of growth temperature of GaAs nucleation layer on InAs/GaAs quantum dots monolithically grown on Ge substrates. Applied Physics Letters, 100(5).
  • Spencer P, Clarke E, Murray R, Groom KM, Alexander RR & Hogg RA (2011) . PHYS REV B, 83(20).
  • Stevens BJ, Groom KM, Roberts JS, Fry PW, Childs DTD & Hogg RA (2010) . ELECTRON LETT, 46(15), 1076-U51.
  • Greenwood PDL, Childs DTD, Kennedy K, Groom KM, Hugues M, Hopkinson M, Hogg RA, Krstajić N, Smith LE, Matcher SJ , Bonesi M et al (2010) . IEEE Journal on Selected Topics in Quantum Electronics, 16(4), 1015-1022.
  • Krstajić N, Smith LE, Matcher SJ, Childs DTD, Bonesi M, Greenwood PDL, Hugues M, Kennedy K, Hopkinson M, Groom KM , MacNeil S et al (2010) . IEEE Journal on Selected Topics in Quantum Electronics, 16(4), 748-754.
  • Groom KM, Stevens BJ, Assamoi PJ, Roberts JS, Hugues M, Childs DTD, Alexander RR, Hopkinson M, Helmy AS & Hogg RA (2009) . IEEE J SEL TOP QUANT, 15(3), 819-827.
  • Stevens BJ, Groom KM, Childs DTD, Ang Y, Alexander RR, Krysa AB, Roberts JS, Helmy AS & Hogg RA (2009) . JAPANESE JOURNAL OF APPLIED PHYSICS, 48(4).
  • Judson PDL, Groom KM, Childs DTD, Hopkinson M & Hogg RA (2009) . IET OPTOELECTRONICS, 3(2), 100-104.
  • Judson PDL, Groom KM, Childs DTD, Hopkinson M, Krstajic N & Hogg RA (2009) . MICROELECTRONICS JOURNAL, 40(3), 588-591.
  • Greenwood PDL, Childs DTD, Groom KM, Stevens BJ, Hopkinson M & Hogg RA (2009) . IEEE J SEL TOP QUANT, 15(3), 757-763.
  • Childs D, Groom KM, Ray SK, Liu HY, Hopkinson M & Hogg RA (2009) Flat-topped emission centred at 1 250 nm from quantum dot superluminescent diodes. S AFR J SCI, 105(7-8), 276-277.
  • Groom KM, Stevens BJ, Childs DT, Alexander RR, Krysa AB, Roberts JS, Helmy AS & Hogg RA (2008) . ELECTRON LETT, 44(15), 905-907.
  • Stevens BJ, Childs DTD, Groom KM, Hopkinson M & Hogg RA (2008) . JAPANESE JOURNAL OF APPLIED PHYSICS, 47(4), 2965-2967.
  • Beanland R, Sanchez AM, Childs D, Groom KM, Liu HY, Mowbray DJ & Hopkinson M (2008) . J APPL PHYS, 103(1).
  • Alexander RR, Childs DTD, Agarwal H, Groom KM, Liu HY, Hopkinson M, Hogg RA, Ishida M, Yamarnoto T, Sugawara M , Arakawa Y et al (2007) . IEEE J QUANTUM ELECT, 43(11-12), 1129-1139.
  • Stevens BJ, Childs DTD, Groom KM, Hopkinson M & Hogg RA (2007) . APPL PHYS LETT, 91(12).
  • Ray SK, Choi TL, Groom KM, Stevens BJ, Liu HY, Hopkinson M & Hogg RA (2007) . IEEE J SEL TOP QUANT, 13(5), 1267-1272.
  • Zhang ZY, Luxmoore IJ, Jin CY, Liu HY, Jiang Q, Groom KM, Childs DT, Hopkinson M, Cullis AG & Hogg RA (2007) . APPL PHYS LETT, 91(8).
  • Jin CY, Liu HY, Groom KM, Jiang Q, Hopkinson M, Badcock TJ, Royce RJ & Mowbray DJ (2007) . PHYS REV B, 76(8).
  • Liu HY, Badcock TJ, Jin CY, Nabavi E, Groom KM, Hopkinson M & Mowbray DJ (2007) . ELECTRON LETT, 43(12), 670-672.
  • Zhang ZY, Luxmoore IJ, Jiang Q, Liu HY, Groom KM, Childs DT, Hopkinson M, Cullis AG & Hogg RA (2007) . ELECTRON LETT, 43(10), 587-589.
  • Kennedy K, Revin DG, Krysa AB, Groom KM, Wilson LR, Cockburn JW & Hogg RA (2007) . JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 46(4B), 2424-2428.
  • Ray SK, Liu HY, Choi TL, Groom KM, Liew SL, Hopkinson M & Hogg RA (2007) . JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 46(4B), 2418-2420.
  • Alexander RR, Childs D, Agarwal H, Groom KM, Liu HY, Hopkinson M & Hogg RA (2007) . JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 46(4B), 2421-2423.
  • Badcock TJ, Royce RJ, Mowbray DJ, Skolnick MS, Liu HY, Hopkinson M, Groom KM & Jiang Q (2007) . APPL PHYS LETT, 90(11).
  • Ray SK, Choi TL, Groom KA, Liu HY, Hopkinson M & Hogg RA (2007) . IEEE PHOTONIC TECH L, 19(2-4), 109-111.
  • Jin CY, Liu HY, Groom KM, Hopkinson M, Badcock TJ, Royce RJ & Mowbray DJ (2007) Photon coupling mechanism in 1.3-μm quantum-dot lasers. Optics Infobase Conference Papers.
  • Jin CY, Liu HY, Groom KM, Hopkinson M, Badcock TJ, Royce RJ & Mowbray DJ (2007) Photon coupling mechanism in 1.3-μm quantum-dot lasers. Optics Infobase Conference Papers.
  • Alexander RR, Childs D, Agarwal H, Groom KM, Liu HY, Hopkinson M, Hogg RA, Badcock TJ, Mowbray DJ, Skolnick MS , Ishida M et al (2007) Systematic study of the effects of δ-p-doping on 1.3μm dot-in-well lasers. Optics Infobase Conference Papers.
  • Jin CY, Liu HY, Groom KM, Hopkinson M, Badcock TJ, Royce RJ & Mowbray DJ (2007) Photon coupling mechanism in 1.3-μm quantum-dot lasers. Optics Infobase Conference Papers.
  • Marko IP, Adams AR, Sweeney SJ, Masse NF, Krebs R, Reithmaier JP, Forchel A, Mowbray DJ, Skolnick MS, Liu HY , Groom KM et al (2007) . PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 244(1), 82-86.
  • Warburton RE, Pellegrini S, Tan L, Ng JS, Krysa A, Groom K, David JPR, Cova S & Buller GS (2006) Design, fabrication and characterisation of InGaAs/InP single-photon avalanche diode detectors.
  • Jin CY, Badcock TJ, Liu HY, Groom KM, Royce RJ, Mowbray DJ & Hopkinson M (2006) . IEEE J QUANTUM ELECT, 42(11-12), 1259-1265.
  • Ray SK, Groom KM, Beattie MD, Liu HY, Hopkinson M & Hogg RA (2006) . IEEE PHOTONIC TECH L, 18(1-4), 58-60.
  • Ray SK, Groom KM, Alexander R, Kennedy K, Liu HY, Hopkinson M & Hogg RA (2006) . J APPL PHYS, 100(10).
  • Kennedy K, Krysa AB, Roberts JS, Groom KM, Hogg RA, Revin DG, Wilson LR & Cockburn JW (2006) . APPL PHYS LETT, 89(20).
  • Liu HY, Liew SL, Badcock T, Mowbray DJ, Skolnick MS, Ray SK, Choi TL, Groom KM, Stevens B, Hasbullah F , Jin CY et al (2006) . APPL PHYS LETT, 89(7).
  • Badcock TJ, Liu HY, Groom KM, Jin CY, Gutierrez M, Hopkinson M, Mowbray DJ & Skolnick MS (2006) . ELECTRON LETT, 42(16), 922-923.
  • Ray SK, Groom KM, Liu HY, Hopkinson M & Hogg RA (2006) . JPN J APPL PHYS 1, 45(4A), 2542-2545.
  • Pellegrini S, Warburton RE, Tan LJJ, Ng JS, Krysa AB, Groom K, David JPR, Cova S, Robertson MJ & Buller GS (2006) . IEEE J QUANTUM ELECT, 42(3-4), 397-403.
  • Zibik EA, Ng WH, Revin DG, Wilson LR, Cockburn JW, Groom KM & Hopkinson M (2006) . APPL PHYS LETT, 88(12).
  • Sellers IR, Mowbray DJ, Badcock TJ, Wells JPR, Phillips PJ, Carder DA, Liu HY, Groom KM & Hopkinson M (2006) . APPL PHYS LETT, 88(8).
  • (2006) Mid-infrared optical coherence tomography: Application in tissue engineering. Optics InfoBase Conference Papers.
  • Kennedy K, Groom KM & Hogg RA (2006) . SEMICOND SCI TECH, 21(1), L1-L5.
  • Ray SK, Groom KM, Liu HY, Hopkinson M & Hogg RA (2005) . Device Research Conference Conference Digest Drc, 2005, 71-72.
  • Young RJ, Stevenson RM, Shields AJ, Atkinson P, Cooper K, Ritchie DA, Groom KM, Tartakovskii AI & Skolnick MS (2005) . PHYS REV B, 72(11).
  • Marko IP, Adams AR, Sweeney SJ, Mowbray DJ, Skolnick MS, Liu HYY & Groom KM (2005) . IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 11(5), 1041-1047.
  • Ray SK, Groom KM, Hogg RA, Liu HY, Hopkinson M, Badcock T, Mowbray DJ & Skolnick MS (2005) . IEEE PHOTONIC TECH L, 17(9), 1785-1787.
  • Liu HY, Childs DT, Badcock TJ, Groom KM, Sellers IR, Hopkinson M, Hogg RA, Robbins DJ, Mowbray DJ & Skolnick MS (2005) . IEEE PHOTONIC TECH L, 17(6), 1139-1141.
  • Ray SK, Groom KM, Hogg RA, Liu HY, Sellers IR, Hopkinson M, Badcock TJ, Ramsay AJ, Mowbray DJ & Skolnick MS (2005) . JPN J APPL PHYS 1, 44(4B), 2520-2522.
  • Liu HY, Steer MJ, Badcock TJ, Mowbray DJ, Skolnick MS, Navaretti P, Groom KM, Hopkinson M & Hogg RA (2005) . APPL PHYS LETT, 86(14).
  • Tartakovskii AI, Makhonin MN, Sellers IR, Cahill J, Andreev AD, Whittaker DM, Wells JPR, Fox AM, Mowbray DJ, Skolnick MS , Groom KM et al (2004) . PHYS REV B, 70(19).
  • Sellers IR, Liu HY, Groom KM, Childs DT, Robbins D, Badcock TJ, Hopkinson M, Mowbray DJ & Skolnick AS (2004) . ELECTRON LETT, 40(22), 1412-1413.
  • Tartakovskii AI, Makhonin MN, Cahill J, Whittaker DM, Wells JPR, Fox AM, Mowbray DJ, Skolnick MS, Steer MJ, Groom KM & Hopkinson M (2004) . APPL PHYS LETT, 85(12), 2226-2228.
  • Liu HY, Sellers IR, Gutierrez M, Groom KM, Soong WM, Hopkinson M, David JPR, Beanland R, Badcock TJ, Mowbray DJ & Skolnick MS (2004) . J APPL PHYS, 96(4), 1988-1992.
  • Liu HY, Sellers IR, Badcock TJ, Mowbray DJ, Skolnick MS, Groom KM, Gutierrez M, Hopkinson M, Ng JS, David JPR & Beanland R (2004) . APPL PHYS LETT, 85(5), 704-706.
  • Tartakovskii AI, Cahill J, Makhonin MN, Whittaker DM, Wells J-PR, Fox AM, Mowbray DJ, Skolnick MS, Groom KM, Steer MJ & Hopkinson M (2004) . Phys Rev Lett, 93(5), 057401.
  • Hogg R, Groom KM, Liu HY, Sellers IR, Ray SK, Badcock T, Gutierrez M, Hopkinson M, Ng JS, R. David JP , Mowbray DJ et al (2004) . Extended Abstracts of the 2004 International Conference on Solid State Devices and Materials.
  • Tartakovskii AI, Groom KM, Adawi AM, Lemaitre A, Fox AM, Mowbray DJ, Skolnick MS & Hopkinson M (2002) . APPL PHYS LETT, 81(22), 4118-4120.
  • Tartakovskii AI, Groom KM, Lemaître A, Adawi AM, Fox AM, Mowbray DJ, Skolnick MS & Steer MJ (2002) 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.
  • Groom KM, Tartakovskii AI, Mowbray DJ, Skolnick MS, Smowton PM, Hopkinson M & Hill G (2002) . APPL PHYS LETT, 81(1), 1-3.
  • Herrmann E, Smowton PM, Ning Y, Groom KM, Mowbray DJ & Hopkinson M (2001) . IEE P-OPTOELECTRON, 148(5-6), 238-242.
  • Groom KM, Wilson LR, Mowbray DJ, Skolnick MS, Hill G, Steer MJ & Hopkinson M (2001) Electrically pumped InGaAs quantum dot ring and cylindrical cavity lasers. ELECTRON LETT, 37(20), 1220-1222.
  • Groom KM, Ashmore AD, Mowbray DJ, Skolnick MS, Hopkinson M, Hill G, Clark J & Smowton PM (2001) 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.

Conference proceedings

  • Mashanovich GZ, Mitchell CJ, Wei C, McQuillan S, Ismaeel R, Heffernan J, Groom KM, Hu T, Yamano D, Thomspon S , Miall D et al (2025) . Optical Interconnects and Packaging 2025 (pp 31-31), 25 January 2025 - 31 January 2025.
  • Mashanovich GZ, Wei C, McQuillan S, Ismaeel R, Lack N, Hu T, Zhou L, Groom KM, Heffernan J, Patey MD , Cardwell CL et al (2024) . Smart Photonic and Optoelectronic Integrated Circuits 2024 (pp 32-32), 27 January 2024 - 1 February 2024.
  • Rowe DJ, Reid L, Wei C, Stirling CJ, Mitchell CJ, Du H, Yan X, Tran DT, Wu Y, Banakar M , Qi Y et al (2023) . 2023 23rd International Conference on Transparent Optical Networks (ICTON) (pp 1-4), 2 July 2023 - 6 July 2023.
  • Mitchell CJ, Osman A, Li K, Panades JS, Nedeljkovic M, Zhou L, Groom KM, Heffernan J & Mashanovich GZ (2023) . Silicon Photonics XVIII (pp 19-19), 28 January 2023 - 3 February 2023.
  • Mashanovich GZ, Reid L, Georgiev G, Wei C, Qi Y, Stirling CJ, Osman A, Wu Y, Qu Z, Heffernan J , Groom KM et al (2022) . Integrated Optics: Devices, Materials, and Technologies XXVI (pp 4-4), 22 January 2022 - 28 February 2022.
  • Groom KM (2020) . SPIE Photonex Industry Talks (pp 3-3), 5 October 2020 - 9 October 2020.
  • (2019) 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
  • Groom K, Matcher SJ, Freer S & Revin D (2018) . Biophotonics: Photonic Solutions for Better Health Care VI (pp 70-70), 22 April 2018 - 26 April 2018.
  • Goldberg GR, Ivanov P, Ozaki N, Childs DTD, Groom KM, Kennedy KL & Hogg RA (2017) . SPIE Proceedings, Vol. 10104 (pp 101041X-101041X)
  • Guan G, Lu ZH, Hirsch M, Goodridge R, Childs DTD, Matcher S, Clare A & Groom KM (2016) . Proceedings, SPIE LASE, Laser 3D Manufacturing III, Vol. 9738(97380Q). San Francisco, USA, 13 February 2016 - 13 February 2016.
  • Childs DTD, Groom KM, Hogg RA, Revin DG, Cockburn JW, Rehman IU & Matcher SJ (2016) . High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management (pp 29-29), 13 February 2016 - 18 February 2016.
  • Tooley IG, Childs DTD, Stevens BJ, Groom KM & Hogg RA (2016) . SPIE Proceedings, Vol. 9767 (pp 97671W-97671W)
  • Childs DTD, Hogg RA, Groom KM, Revin DG, Rehman IU, Cockburn JW & Matcher SJ (2016) . Biomedical Vibrational Spectroscopy 2016: Advances in Research and Industry (pp 19-19), 13 February 2016 - 18 February 2016.
  • Ghazal OMS, Lei D, Childs DT, Stevens BJ, Babazadeh N, Hogg RA & Groom KM (2016) . SPIE Proceedings, Vol. 9767 (pp 976706-976706)
  • Ghazal OMS, Groom KM, Stevens BJ, Babazadeh N, Childs DTD & Hogg RA (2015) 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
  • Ghazal OMS, Groom KM, Stevens BJ, Babazadeh N, Childs DTD & Hogg RA (2015) High-power gaAs-based superluminescent diodes employing window-like facets for low spectral modulation. Optics Infobase Conference Papers
  • Taylor RJE, Childs DTD, Crombie A, Stevens BJ, Ivanov PS, Babazadeh N, Groom KM, Shepherd L, Ternent G, Thoms S , Zhou H et al (2014) . 2014 International Semiconductor Laser Conference (pp 213-214), 7 September 2014 - 10 September 2014.
  • Groom OMSGKM, Stevens BJ, Babazadeh N, Childs DTD & Hogg RA (2014) . 2014 International Semiconductor Laser Conference (pp 175-176), 7 September 2014 - 10 September 2014.
  • Ghazal OMS, Groom KM, Stevens BJ, Babazadeh N, Childs DTD & Hogg RA (2014) High-power gaAs-based superluminescent diodes employing window-like facets for low spectral modulation. Optics InfoBase Conference Papers
  • Ghazal OMS, Groom KM, Stevens BJ, Babazadeh N, Childs DTD & Hogg RA (2014) . 2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014) (pp 175-176)
  • Taylor RJE, Childs DTD, Crombie A, Stevens BJ, Ivanov PS, Babazadeh N, Groom KM, Shepherd L, Ternent G, Thoms S , Zhou H et al (2014) . 2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014) (pp 213-214)
  • Taylor RJE, Williams DM, Shepherd LR, Childs DTD, Stevens BJ, Khamas S, Groom KM, Hogg RA, Ikeda N & Sugimoto Y (2013) . Pacific Rim Conference on Lasers and Electro Optics CLEO Technical Digest
  • Taylor RJE, Williams DM, Groom KM, Childs DTD, Stevens BJ, Roberts T, Khamas S, Hogg RA, Ikeda N & Sugimoto Y (2012) . Conference Digest IEEE International Semiconductor Laser Conference (pp 167-168)
  • Williams DM, Groom KM, Childs DTD, Stevens BJ, Khamas S, Roberts TS, Taylor RJE, Hogg RA, Ikeda N & Sugimoto Y (2012) . Proceedings of SPIE the International Society for Optical Engineering, Vol. 8255
  • Williams DM, Groom KM, Stevens BJ, Jiang Q, Childs DTD, Taylor RJ, Khamas S, Hogg RA, Ikeda N & Sugimoto Y (2011) . IEEE Photonic Society 24th Annual Meeting Pho 2011 (pp 705-706)
  • Williams DM, Groom KM, Stevens BJ, Jiang Q, Childs DTD, Taylor RJ, Khamas S, Hogg RA, Ikeda N & Sugimoto Y (2011) Epitaxially regrown GaAs based photonic crystal surface emitting laser. IEEE Photonic Society 24th Annual Meeting, PHO 2011 (pp 705-706)
  • Majid MA, Childs DTD, Chen S, Groom KM, Kennedy K, Airey R, Hogg RA, Clarke E, Spencer P & Murray R (2010) . 2010 Photonics Global Conference Pgc 2010
  • Spencer P, Shi J, Clarke E, Murray R, Majid M, Childs D, Alexander R, Groom K & Hogg R (2010) . Proceedings of SPIE the International Society for Optical Engineering, Vol. 7616
  • Groom KM, Stevens BJ, Greenwood PDL, Childs DTD, Roberts JS, Lomas M, Hugues M, Shahid H & Hogg R (2010) . Proceedings of SPIE the International Society for Optical Engineering, Vol. 7616
  • Groom KM, Stevens BJ, Greenwood PDL, Childs DTD, Roberts JS, Kennedy K, Fry PW & Hogg RA (2009) 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)
  • Greenwood PDL, Jiang Q, Childs DTD, Zhang Z, Groom KM, Kennedy K, Hugues M, Hopkinson M & Hogg RA (2009) Broad-band High Power Quantum Dot Superluminescent Diodes. 2009 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1AND 2 (pp 604-605)
  • Krstajic N, Smallwood R, Childs DTD, Greenwood PDL, Hugues M, Kennedy K, Hopkinson M, Groom KM, Hogg RA, Smith LE , Matcher SJ et al (2009) Optical coherence tomography with high power quantum-dot superluminescent diodes. 2009 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1AND 2 (pp 207-208)
  • Stevens BJ, Groom KM, Childs DTD, Roberts JS & Hogg RA (2009) . CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference (pp 1-1), 14 June 2009 - 19 June 2009.
  • Stevens BJ, Groom KM, Childs DTD, Roberts JS & Hogg RA (2009) Buried inGaP/GaAs grating Distributed Feedback laser with AlGaAs cladding. Optics Infobase Conference Papers
  • Hogg RA, Greenwood PDL, Childs DTD, Krstajic N, Kennedy K, Groom KM, Hugues M, Hopkinson M, Smith LE, Matcher SJ , Bonesi M et al (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)
  • Judson PDL, Groom KM, Childs DTD, Hopkinson M & Hogg RA (2008) Multi-Contact Quantum Dot Superluminescent Diodes for Optical Coherence Tomography. 2008 IEEE PHOTONICSGLOBAL@SINGAPORE (IPGC), VOLS 1 AND 2 (pp 104-106)
  • Judson PDL, Groom KM, Childs DTD, Hopkinson M & Hogg RA (2008) . 2008 IEEE Photonicsglobal at Singapore Ipgc 2008
  • Childs DTD, Stevens BJ, Groom KM, Hopkinson M & Hogg RA (2008) Tuning and Modulation in Two Section Quantum Dot Lasers. 2008 IEEE PHOTONICSGLOBAL@SINGAPORE (IPGC), VOLS 1 AND 2 (pp 93-96)
  • Groom KM, Assamoi PJ, Hugues M, Roberts JS, Stevens BJ, Childs DTD, Alexander RR, Hopkinson M & Hogg RA (2008) 1.3 mu m Quantum Dot Self-Aligned Stripe Laser. 2008 IEEE PHOTONICSGLOBAL@SINGAPORE (IPGC), VOLS 1 AND 2 (pp 97-100)
  • Childs DTD, Stevens BJ, Groom KM, Hopkinson M & Hogg RA (2008) Two Section Quantum Dot Devices for Tuning and Modulation. 2008 IEEE 21ST INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (pp 109-110)
  • Groom KM, Stevens BJ, Childs DTD, Alexander RR, Roberts JS, Helmy AS & Hogg RA (2008) GaAs-Based Self-Aligned Laser Incorporating an InGaP Opto-Electronic Confinement Layer. 2008 IEEE 21ST INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (pp 97-98)
  • Judson PDL, Groom KM, Childs DTD, Hopkinson M, Krstajic N & Hogg RA (2008) Multi-Contact Quantum Dot Superluminescent Diodes for Optical Coherence Tomography. 2008 IEEE 21ST INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (pp 107-108)
  • Stevens BJ, Groom KM, D. Childs DT, Alexander RR, Roberts JS, Helmy AS & Hogg RA (2008) . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
  • Jin CY, Liu HY, Badcock TJ, Groom KM, Mowbray DJ, Hopkinson M & Wada O (2008) . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
  • L. Judson PD, Groom KM, D. Childs DT, Hopkinson M, Krstajic N & Hogg RA (2008) . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
  • D. Childs DT, Stevens BJ, Groom KM, Hopkinson M & Hogg RA (2008) . Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials, 23 September 2008 - 26 September 2008.
  • Groom KM, Alexander RR, Childs DTD, Krysa AB, Roberts JS, Helmy AS & Hogg RA (2008) . 2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro Optics CLEO QELS
  • Groom KM, Alexander RR, Childs DTD, Krysa AB, Roberts JS, Helmy AS & Hogg RA (2008) 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)
  • Liu HY, Hopkinson M, Groom K, Hogg RA & Mowbray DJ (2008) . Proceedings of SPIE the International Society for Optical Engineering, Vol. 6909
  • Groom KM, Alexander RR, Childs DTD, Krysa AB, Roberts JS, Helmy AS & Hogg RA (2008) GaAs-based buried heterostructure laser incorporating an InGaP opto-electronic confinement layer. Optics Infobase Conference Papers
  • Groom KM, Alexander RR, Childs DTD, Krysa AB, Roberts JS, Helmy AS & Hogg RA (2008) GaAs-based buried heterostructure laser incorporating an InGaP opto-electronic confinement layer. Optics Infobase Conference Papers
  • Mowbray D, Badcock T, Sellers I, Ramsay A, Skolnick M, Liu HY, Hopkinson M, Groom K, Hogg R, Beanland R , Childs D et al (2007) 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)
  • Jin CY, Liu HY, Groom KM, Hopkinson M, Badcock TJ, Royce RJ & Mowbray DJ (2007) . Conference on Lasers and Electro Optics 2007 CLEO 2007
  • Taboada AG, Suárez F, Granados D, Badcock TJ, Mowbray DJ, Groom KM, Alén B, García JM & Dotor ML (2007) . Aip Conference Proceedings, Vol. 893 (pp 909-910)
  • Alexander RR, Childs D, Agarwal H, Groom KM, Liu HY, Hopkinson M, Hogg RA, Badcock TJ, Mowbray DJ, Skolnick MS , Ishida M et al (2007) . Conference on Lasers and Electro Optics Europe Technical Digest
  • Jin CY, Liu HY, Groom KM, Hopkinson M, Badcock TJ, Royce RJ & Mowbray DJ (2007) 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)
  • Alexander RR, Childs D, Agarwal H, Groom KM, Liu HY, Hopkinson M, Hogg RA, Ishida M, Yamamoto T, Sugawara M , Arakawa Y et al (2007) 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)
  • Choi TL, Ray SK, Zhang Z, Childs D, Groom KM, Stevens BJ, Liu H, Hopkinson M & Hogg RA (2007) 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)
  • Blazek M, Breuer S, Gensty T, Elsäßer WE, Hopkinson M, Groom KM, Calligaro M, Resneau P & Krakowski M (2007) . Proceedings of SPIE the International Society for Optical Engineering, Vol. 6603
  • Zibik EA, Ng WH, Soulby MR, Wilson LR, Cockburn JW, Colley CS, Hebden JC, Delpy DT, Groom KM & Hopkinson M (2006) . Conference on Lasers and Electro Optics and 2006 Quantum Electronics and Laser Science Conference CLEO QELS 2006
  • Ray SK, Alexander R, Kennedy K, Groom KM, Liu HY, Hopkinson M & Hogg RA (2006) . Conference on Lasers and Electro Optics and 2006 Quantum Electronics and Laser Science Conference CLEO QELS 2006
  • Jin CY, Liu HY, Badcock TJ, Groom KM, Gutierrez M, Royce R, Hopkinson M & Mowbray DJ (2006) . IEE PROCEEDINGS-OPTOELECTRONICS, Vol. 153(6) (pp 280-283)
  • Young RJ, Stevenson RM, Shields AJ, Atkinson P, Cooper K, Ritchie DA, Groom KM, Tartakovskii AI & Skolnick MS (2006) . PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Vol. 32(1-2) (pp 97-100)
  • Liu HY, Badcock TJ, Groom KM, Hopkinson M, Gutierrez M, Childs DT, Jin C, Hogg RA, Sellers IR, Mowbray DJ , Skolnick MS et al (2006) . Semiconductor Lasers and Laser Dynamics II, Vol. 6184 (pp 18417-18417)
  • Ray SK, Groom KM, Beattie MD, Liu HY, Hopkinson M & Hogg RA (2006) . Quantum Dots, Particles, and Nanoclusters III, Vol. 6129 (pp 12907-12907)
  • Kennedy K, Revin DG, Krysa AB, Groom KM, Wilson LR, Cockburn JW & Hogg RA (2006) . Extended Abstracts of the 2006 International Conference on Solid State Devices and Materials, 12 September 2006 - 15 September 2006.
  • Warburton RE, Pellegrini S, Tan L, Ng JS, Krysa A, Groom K, David JPR, Cova S & Buller GS (2006) Design, fabrication and characterisation of InGaAs/InP single-photon avalanche diode detectors. Optics Infobase Conference Papers
  • Groom KM, Ray SK, Alexander RR, Choi T, Kennedy K, Liu H, Hopkinson M & Hogg RA (2006) . Conference Digest IEEE International Semiconductor Laser Conference (pp 47-48)
  • Kennedy K, Revin DG, Krysa AB, Groom KM, Wilson LR, Cockburn JW & Hogg RA (2006) . Conference Digest IEEE International Semiconductor Laser Conference (pp 61-62)
  • Marko IP, Masse N, Sweeney SJ, Adams AR, Sellers IR, Mowbray DJ, Skolnick MS, Liu HY & Groom KM (2005) . Conference Proceedings Lasers and Electro Optics Society Annual Meeting LEOS, Vol. 2005 (pp 402-403)
  • Sellers IR, Liu HY, Mowbray DJ, Badcock TJ, Groom KM, Hopkinson M, Gutierrez M, Skolnick MS, Beanland R, Childs DT & Robbins DJ (2005) 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)
  • Liu HY, Badcock TJ, Sellers IR, Soong WM, Groom KM, Hopkinson M, Mowbray DJ & Skolnick MS (2005) . PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Vol. 26(1-4) (pp 129-132)
  • Sellers IR, Liu HY, Badcock TJ, Groom KM, Mowbray DJ, Gutierrez M, Hopkinson M & Skolnick MS (2005) . PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Vol. 26(1-4) (pp 382-385)
  • Marko IP, Masse N, Sweeney SJ, Adams AR, Sellers IR, Mowbray DJ, Skolnick MS, Liu HY & Groom KM (2005) Effect of gain saturation and nonradiative recombination on the thermal characteristics of InAs/GaAs 1.3 μm quantum dot lasers. 2005 IEEE LEOS Annual Meeting Conference Proceedings (LEOS) (pp 401-402)
  • Liu HY, Sellers IR, Gutierrez M, Groom KM, Beanland R, Soong WM, Hopkinson M, David JPR, Badcock TJ, Mowbray DJ & Skolnick MS (2005) . MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, Vol. 25(5-8) (pp 779-783)
  • Marko IP, Adams AR, Sweeney SJ, Sellers IR, Mowbray DJ, Skolnick MS, Liu HY & Groom KM (2004) 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)
  • Tartakovskii AI, Groom KM, Adawi AM, Lemaitre A, Mowbray DJ, Skolnick MS & Hopkinson M (2004) . ULTRAFAST PHENOMENA IN SEMICONDUCTORS AND NANOSTRUCTURE MATERIALS VIII, Vol. 5352 (pp 348-354)
  • Tartakovskii A, Cahill J, Whittaker D, Wells J-P, Fox M, Mowbray D, Skolnick M, Groom K, Steer M & Hopkinson M (2004) . Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies (pp IWC4-IWC4), 2004.
  • Tartakovsk AI, Cahill J, Whittaker DM, Wells JPR, Fox AM, Mowbray DJ, Skolnick MS, Groom KM, Steer MJ & Hopkinson M (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)

Patents

  • Groom KM (2010) Semiconductor light source and method of fabrication thereof. GB2471266 (national/regional). Appl. 29 Dec 2010.

Preprints

  • Mitchell CJ, Zhou L, Li K, Adeyemi D, Osman A, Nedeljkovic M, Churchill G, Gates JC, Reed GT, Groom KM , Heffernan J et al (2025) , arXiv.
  • Warburton RE, Pellegrini S, Tan L, Ng JS, Krysa A, Groom K, David JPR, Cova S & Buller GS (2006) , arXiv.
  • Pellegrini S, Warburton RE, Tan LJJ, Ng JS, Krysa AB, Groom K, David JPR, Cova S, Robertson MJ & Buller GS (2006) , arXiv.
  • Young RJ, Stevenson RM, Shields AJ, Atkinson P, Cooper K, Ritchie DA, Groom KM, Tartakovskii AI & Skolnick MS (2006) , arXiv.
Teaching activities
  • EEE118 Electronic Devices & Circuits
  • EEE6214 Packaging & Reliability of Microsystems
Professional activities and memberships
  • 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

Links

Semiconductor and Quantum Technologies