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Rodney Loudon FRS (born 25 July 1934) is a British physicist, best known for his work in quantum optics. He is an Emeritus Professor of Theoretical Physics at the University of Essex.[2][3][4]

Rodney Loudon
Born (1934-07-25) July 25, 1934 (age 84)[1]
Alma mater
Scientific career



Loudon attended the Bury Grammar School in Manchester. He received his Master of Arts and Doctor of Philosophy degrees from the University of Oxford, where he was a member of the Brasenose College.[1]


Loudon's research focused on various aspects of theoretical solid state and laser physics, and particularly on light scattering. His 1964 paper on the Raman effect was one of the 100 most cited papers in all areas of physical science between 1960 and 1969. He has published more than 190 papers and 3 books, one of which (the three editions of The Quantum Theory of Light) is recognized internationally and has been translated into Russian and Japanese.[3]

His early work on excitons, phonons and magnons and his later treatments of non-classical effects in the statistical properties of light have attracted many citations. His later work on surface excitations and on optical amplification, attenuation and detection has also proved to be important.[3]

Loudon worked at the University of Essex as Professor, Chairman and Dean. He has also worked at British Telecom, Royal Radar Establishment, Bell Telephone Laboratories and Radio Corporation of America, and he has been a consultant to these organisations over several years, contributing to both applied and fundamental research.[3]


Awards and honoursEdit


  1. ^ a b Loudon, Prof. Rodney. Who's Who (online ed.). A & C Black, an imprint of Bloomsbury Publishing plc. 2017. doi:10.1093/ww/9780199540884.013.24961.   (subscription required)
  2. ^ a b Staff profile, University of Essex, retrieved 2016-03-14.
  3. ^ a b c d e "Rodney Loudon". London: Royal Society. One or more of the preceding sentences may incorporate text from the website where "all text published under the heading 'Biography' on Fellow profile pages is available under Creative Commons Attribution 4.0 International License." "Royal Society Terms, conditions and policies". Archived from the original on February 20, 2016. Retrieved 2016-03-09.
  4. ^, retrieved 2016-03-14.