Title :
High-resolution optical spectrum analyzer based on moving space charge field effects in photoconductive semiconductors
Author :
Chen-Chia Wang ; Davidson, Fraser
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
Summary form only given. Spatially inhomogeneous optical intensity patterns are created when two mutually coherent optical fields interfere inside photoconductive semiconductors with a finite intersection angle. Diffusion of photo-generated free-charge carriers ensues due to the nonzero concentration gradient, resulting in the formation of an internal space charge electric field. This paper shows the experimental results for an optical spectrum analyzer based on such a moving space charge field in a photoconductive CdTe:V:Mn sample.
Keywords :
photoconducting devices; space charge; spectral analysers; CdTe:V,Mn; high-resolution optical spectrum analyzer; moving space charge field; photoconductive semiconductor; Optical attenuators; Optical beams; Optical filters; Optical sensors; Photoconductivity; Power harmonic filters; Pulse measurements; Space charge; Spectral analysis; Transducers;
Conference_Titel :
Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-443-2
