Laser transmitting and receiving device

Details Laser transmitting and receiving device Laser transmitting and receiving device

1978-03-16

1980-04-22

Corbin, John K.

G02B 2700

Patent

active

041992261

ABSTRACT:
A laser for the production and radiation of monochromatic light to a first polarizer arranged in the beam path of a resonator of the laser and operative to pass one of two light beam components linearly polarized perpendicularly to one another and to deflect the other linearly polarized component out of the resonator onto a photodetector for detecting that reflected part of the radiated light. A second polarizer is arranged in the direction of radiation of the light beam, behind a decoupling mirror of the resonator, and is operative to convert linearly-polarized light into circularly-polarized light. Adjacent the second polarizer in the direction of radiation is a collimator consisting of an optical system for widening the transmission beam to a remote reflector and narrowing the reflected beam received from the remote reflector back into the second polarizer and the resonator from which it is deviated onto the photodetector.

REFERENCES:
patent: 3401590 (1968-09-01), Massey
patent: 3406354 (1968-10-01), Dumanchin
patent: 3407364 (1968-10-01), Turner
patent: 3442571 (1969-05-01), Itzkan
patent: 3969573 (1976-07-01), Bouwhuis et al.

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