B.S.T.J. Briefs: Detection of Weakly Modulated Light at MicrowaveFrequencies

Detection of Weakly Modulated Light at Microwave Frequencies By M. G. C O H E N and E. I. G O R D O N ( M a n u s c r i p t r e c e i v e d A u g u s t 10, 1964) Studies of the photoelastie, electro optic or magnetic-optic properties o f m a t e r i a l s a t high f r e q u e n c i e s o f t e n r e q u i r e t h e d e t e c t i o n o f m i c r o w a v e m o d u l a t e d light. I n m a n y cases, t h e m o d u l a t i o n d e p t h i s s u f f i c i e n t l y homodyne-superheterodyne s m a l l t h a t q u a n t i t a t i v e m e a s u r e m e n t b e c o m e s d i f f i c u l t i f not i m p o s s i b l e . T h e purpose of this brief is to describe a a b l y loss t h a n 10 6.