Movement and focus control system for a high-energy laser

Details Movement and focus control system for a high-energy laser Movement and focus control system for a high-energy laser

1985-10-28

1988-09-20

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356153, 372 33, 372 34, 372107, 21912174, 21912178, 21912179, 21912181, G01B 1126, H01S 300

Patent

active

047721219

ABSTRACT:
An alignment laser and cooperative optics are operable to produce sensor images of the cavity mirrors of a high-energy laser system. Means are disclosed responsive to the centroids of the sensor images for providing real-time closed-loop pointing direction control. Means are disclosed responsive to the size of the sensor images for providing real-time closed-loop focus control. A lens system cooperative with the alignment laser and the cavity mirrors is disclosed for establishing and maintaining the alignment laser in a collimated state when illuminating the sensor. In the preferred embodiment, the cavity mirrors are configured as a confocal unstable laser resonator.

REFERENCES:
patent: 3564452 (1971-02-01), Rempel
patent: 3902036 (1975-08-01), Zaleckas
patent: 3999858 (1976-12-01), Hernquist et al.
patent: 4146329 (1979-03-01), King et al.
patent: 4249140 (1981-02-01), Frieberg
patent: 4530602 (1985-07-01), Pomphrey

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