Optical radar transceiver control apparatus

Details Optical radar transceiver control apparatus Optical radar transceiver control apparatus

1985-08-01

1987-12-29

Paschall, M. H.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356152, 332 751, 372 32, G01C 308

Patent

active

047164441

ABSTRACT:
The apparatus is part of an optical radar set and comprises a high powered O.sub.2 pulsed transmitter laser which is injection controlled to operate at a fixed frequency offset from a lower powered CO.sub.2 local oscillator laser. A portion of the output of the local oscillator laser is applied to an acousto-optic Bragg cell, together with an RF signal equal to the desired intermediate frequency of the radar set. The upshifted first order output of the Bragg cell is injected into the transmitter laser for stabilization purposes. This results in a stable intermediate frequency for the optical radar set.

REFERENCES:
patent: 4146328 (1979-03-01), Hullein et al.
patent: 4215936 (1980-08-01), Winocur
patent: 4240746 (1980-12-01), Courtenay et al.
patent: 4329664 (1982-05-01), Javan
patent: 4405230 (1983-09-01), Tew et al.
patent: 4572662 (1986-02-01), Silverman

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