Optical heterodyne detection method and apparatus utilizing a sc

Details Optical heterodyne detection method and apparatus utilizing a sc Optical heterodyne detection method and apparatus utilizing a sc

1993-12-22

1995-12-19

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

356345, G01B 902

Patent

active

054773199

ABSTRACT:
An optical heterodyne detection method of detecting a beat signal by heterodyne detection using a superimposition of two or more beams of light including a signal beam and a reference beam, includes the steps of: generating a scattered reference beam from the reference beam: and detecting the beat signal obtained from the scattered reference beam and the signal beam, by superimposing the scattered reference beam and the signal beam.

REFERENCES:
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patent: 4913547 (1990-04-01), Moran
patent: 4962431 (1990-10-01), Imakawa et al.
patent: 5353109 (1994-10-01), Langdon et al.
Harada et al, "A Study of Beam Tracking Schemes Robust to Optical Background Noise in Optical Intersatellite Links (ISLs)", IEICE Technical Report, Sep. 28, 1989.

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