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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 34, Iss. 28 — Oct. 1, 1995
  • pp: 6496–6499

Simple laser velocimeter that uses photoconductive semiconductors to measure optical frequency differences

Chen-Chia Wang, Frederic Davidson, and Sudhir Trivedi  »View Author Affiliations


Applied Optics, Vol. 34, Issue 28, pp. 6496-6499 (1995)
http://dx.doi.org/10.1364/AO.34.006496


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Abstract

The dc photocurrents generated by steady-state moving space-charge fields inside photoconductive semiconductors containing deep level donors and traps can be used to determine the relative frequency differences between the two interfering optical fields that establish the space-charge fields. A simple laser velocimeter that uses a semi-insulating GaAs:Cr sample to detect the Doppler frequency shift between two laser beams is demonstrated.

© 1995 Optical Society of America

History
Original Manuscript: November 10, 1994
Revised Manuscript: March 13, 1995
Published: October 1, 1995

Citation
Chen-Chia Wang, Frederic Davidson, and Sudhir Trivedi, "Simple laser velocimeter that uses photoconductive semiconductors to measure optical frequency differences," Appl. Opt. 34, 6496-6499 (1995)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-34-28-6496

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