Alignment system for a confocal unstable laser resonator

Details Alignment system for a confocal unstable laser resonator Alignment system for a confocal unstable laser resonator

1984-08-13

1986-12-30

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Mirror support or alignment structure

372108, 372 95, 372103, 372 99, H01S 308

Patent

active

046334793

ABSTRACT:
The disclosed alignment system for a reciprocal path confocal unstable laser resonator of the present invention makes possible extremely precise cavity boresight alignment in a manner neither requiring a separate alignment laser or other alignment reference source, nor requiring physically large optical components that heretofore have placed severe constraints on system integrability, among other advantages. In accordance with the present invention, means are disclosed operative during the interpulse interval of the confocal unstable laser resonator for extracting at least two received energy beams of selected magnification factor and correspondingly reduced beam size out of the optical cavity of the confocal unstable laser resonator, and means are disclosed operative in response to the at least two received optical energy beams of selected magnification factor and beam size for determining the relative mis-alignment therebetween to provide an extremely precise signal indication of cavity boresight alignment. The extracting means is positionable both within and without the optical cavity of the confocal unstable laser resonator.

REFERENCES:
patent: 4123150 (1978-10-01), Sziklas
patent: 4151487 (1979-04-01), Chin
patent: 4393303 (1983-07-01), Spinhirne
patent: 4520486 (1985-05-01), Lavarini
Chester; "Beam Steering in Confocal Unstable Resonators"; IEEE JQE, vol. QE-9, No. 2, Feb. 1973.

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