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George Horace Brooke Thompson

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George Horace Brooke Thompson
Born2nd March 1928[1]
Beckenham, Kent
Died18th July 2025
Harlow, Essex
Resting place
Sawbridgeworth, Hertfordshire
EducationQueen's College, Cambridge[2], University of Cambridge, University of Oxford
Known forGallium arsenide semiconductor lasers
AwardsJ. J. Thomson Medal (1992)
Scientific career
WorkplacesStandard Telecommunication Laboratories (STL), Bell-Northern Research (BNR), Nortel Networks

George Horace Brooke Thompson (March 1928 – July 2025), known as Robin Thompson, was a British physicist whose research focused on semiconductor lasers, optical waveguides and optical devices.[3]

His published work included semiconductor-laser filamentation, multilayer heterostructures, far-field emission and distributed-feedback laser modelling. In 1992 he received the J. J. Thomson Medal for Electronics for his work on semiconductor lasers and optical devices.[4]

Thompson was also the author of the 1980 monograph Physics of Semiconductor Laser Devices, which was reviewed in Nature, Physics Today and Electronics and Power; reviewing it in the latter, D. H. Newman wrote that the book was "much more than a review" and said that specialist semiconductor-laser researchers would find "a wealth of knowledge and ideas" in it.[5][6][7][8]

Education and early career

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A local memorial published after Thompson's death states that he was born in March 1928 and studied at the universities of Cambridge and Oxford.[3]

By 1955 Thompson was working at Standard Telecommunication Laboratories in Enfield. That year he published a paper in Nature concerning unusual wave-propagation characteristics in magnetised ferrites.[9] His subsequent work at the company's Harlow laboratories concentrated on semiconductor lasers and related optical devices. By 1994 his affiliation was given as BNR Europe Ltd, Harlow.[10]

Semiconductor-laser research

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In 1972 Thompson published a theoretical treatment of self-focusing and filament formation in semiconductor lasers. The model related the phenomenon to variations in dielectric constant caused by changes in injected carrier density and predicted that filament width would contract as current increased.[11]

In work with P. A. Kirkby, Thompson developed a model relating the far-field emission pattern of a double-heterostructure laser to its waveguide parameters. Their experiments showed that the addition of a passive layer could reduce the measured half-power angular width of the emitted beam.[12] Thompson and Kirkby subsequently analysed four- and five-layer gallium-aluminium-arsenide/gallium-arsenide heterostructures in which optical distribution and carrier confinement could be optimised separately.[13]

In 1975 Thompson, Kirkby and Whiteaway analysed optical scattering in double-heterostructure and five-layer lasers, examining imperfections at heterostructure interfaces as a possible source of excess optical loss.[14]

Experimental work published in 1976 by Thompson, Henshall, Whiteaway and Kirkby described five-layer lasers that used inner heterojunctions for carrier confinement and outer heterojunctions for optical confinement.[15]

Thompson's later work included research into the temperature sensitivity of long-wavelength semiconductor lasers.[16]

In 1989 he co-authored an assessment of quarter-wave phase-shifted distributed-feedback laser structures.[17]

A 1994 invited paper co-authored by Thompson described a multimode, large-signal model of distributed-feedback lasers. The model incorporated spatial hole burning, carrier transport, nonlinear gain and device parasitics, and its predictions were compared with experimental measurements.[10]

Book and patents

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Physics of Semiconductor Laser Devices covered semiconductor materials, crystal growth and fabrication, heterostructures, optical waveguides, stripe lasers, dynamic behaviour and distributed-feedback structures.[5][18]

Thompson was named as inventor on patent families concerning injection lasers, diffraction gratings and wavelength-selective optical devices. A British patent filed in 1970 described a heterostructure injection laser in which a non-planar junction restricted current injection to a limited region.[19]

Later inventions included a diffraction grating with a 1988 priority date,[20] and an optical multiplexer/demultiplexer employing tandem gratings for wavelength-division multiplexing, with a 1998 priority date.[21]

Recognition

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In 1992 Thompson received the J. J. Thomson Medal for Electronics from the Institution of Engineering and Technology. The official recipient list records that it was awarded for his extensive work on semiconductor lasers and optical devices.[4]

References

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  1. ↑ "GRO Index of Births – George Horace Brooke Thompson". FreeBMD. Free UK Genealogy. Retrieved 12 August 2026.
  2. ↑ "Queens' College Record 1984" (PDF). Queens' College, Cambridge. 1984. Retrieved 12 August 2026.
  3. 1 2 "George (Robin) Thompson (1928–2025)" (PDF). The Sawbridgeworth Flyer. No. 117. September 2025. p. 13. Retrieved 8 August 2026.
  4. 1 2 "Recipients of the J J Thomson Medal for Electronics" (PDF). Institution of Engineering and Technology. p. 2. Retrieved 8 August 2026.{{cite web}}: CS1 maint: url-status (link)
  5. 1 2 Thompson, G. H. B. (1980). Physics of Semiconductor Laser Devices. Chichester and New York: John Wiley & Sons. ISBN 978-0-471-27685-2.
  6. ↑ Smith, S. D. (26 February 1981). "Semiconductor lasers come of age". Nature. 289: 830. doi:10.1038/289830a0.
  7. ↑ Holonyak, Nick (1 April 1981). "Physics of Semiconductor Laser Devices". Physics Today. doi:10.1063/1.2914519.
  8. ↑ Newman, D. H. (November–December 1980). "Physics of Semiconductor Laser Devices". Electronics and Power. 26 (11/12): 904. Retrieved 13 August 2026.
  9. ↑ Thompson, G. H. B. (25 June 1955). "Unusual Waveguide Characteristics associated with the Apparent Negative Permeability obtainable in Ferrites". Nature. 175: 1135–1136. doi:10.1038/1751135b0.
  10. 1 2 Whiteaway, J. E. A.; Wright, A. P.; Garrett, B.; Thompson, G. H. B.; Carroll, J. E.; Zhang, L. M.; Tsang, C. F.; White, I. H.; Williams, K. A. (July 1994). "Detailed large-signal dynamic modelling of DFB laser structures and comparison with experiment". Optical and Quantum Electronics. 26: S817–S842. doi:10.1007/BF00326664.
  11. ↑ Thompson, G. H. B. (August 1972). "A theory for filamentation in semiconductor lasers including the dependence of dielectric constant on injected carrier density". Opto-electronics. 4: 257–310. doi:10.1007/BF02334396.
  12. ↑ Kirkby, P. A.; Thompson, G. H. B. (August 1972). "The effect of double heterojunction waveguide parameters on the far field emission patterns of lasers". Opto-electronics. 4: 323–334. doi:10.1007/BF02334398.
  13. ↑ Thompson, G. H. B.; Kirkby, P. A. (1973). "(GaAl)As lasers with a heterostructure for optical confinement and additional heterojunctions for extreme carrier confinement". IEEE Journal of Quantum Electronics. 9 (2): 311–318. doi:10.1109/JQE.1973.1077458.
  14. ↑ Thompson, G. H. B.; Kirkby, P. A.; Whiteaway, J. E. A. (July 1975). "The analysis of optical scattering in double-heterostructure and five-layer heterostructure (GaAl)As/GaAs injection lasers". IEEE Journal of Quantum Electronics. 11 (7): 481–488. doi:10.1109/JQE.1975.1068664.
  15. ↑ Thompson, G. H. B.; Henshall, G. D.; Whiteaway, J. E. A.; Kirkby, P. A. (1976). "Narrow-beam five-layer (GaAl)As/GaAs heterostructure lasers with low threshold and high peak power". Journal of Applied Physics. 47: 1501–1514. doi:10.1063/1.322816.
  16. ↑ Thompson, G. H. B. (27–29 April 1981). Temperature sensitivity of long-wavelength lasers. Optical Fiber Communication Conference. San Francisco: Optica Publishing Group. paper TUA2. doi:10.1364/OFC.1981.TUA2.
  17. ↑ Whiteaway, J. E. A.; Thompson, G. H. B.; Collar, A. J.; Armistead, C. J. (June 1989). "The design assessment of λ/4 phase-shifted DFB laser structures". IEEE Journal of Quantum Electronics. 25 (6): 1261–1279. doi:10.1109/3.29257.
  18. ↑ "Physics of semiconductor laser devices". ETDEWEB. Retrieved 8 August 2026.
  19. ↑ "GB1273284A – Improvements in or relating to injection lasers". Google Patents. Retrieved 8 August 2026.
  20. ↑ "GB2222891B – Diffraction grating". Google Patents. Retrieved 8 August 2026.
  21. ↑ "US6243514B1 – Optical multiplexer/demultiplexer". Google Patents. Retrieved 8 August 2026.
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