SIMPLE LASER VELOCIMETER THAT USES PHOTOCONDUCTIVE SEMICONDUCTORS TO MEASURE OPTICAL FREQUENCY DIFFERENCES

Authors
WANG CC DAVIDSON F TRIVEDI S
Citation
Cc. Wang et al., SIMPLE LASER VELOCIMETER THAT USES PHOTOCONDUCTIVE SEMICONDUCTORS TO MEASURE OPTICAL FREQUENCY DIFFERENCES, Applied optics, 34(28), 1995, pp. 6496-6499
Citations number
5
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
34
Issue
28
Year of publication
1995
Pages
6496 - 6499
Database
ISI
SICI code
0003-6935(1995)34:28<6496:SLVTUP>2.0.ZU;2-Y
Abstract
The de photocurrents generated by steady-state moving space-charge fie lds 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-c harge fields. A simple laser velocimeter that uses a semi-insulating G aAs:Cr sample to detect the Doppler frequency shift between two laser beams is demonstrated.