Apparatus for protecting a laser

Details Apparatus for protecting a laser Apparatus for protecting a laser

1989-08-28

1990-08-21

Davie, James W.

Coherent light generators

Particular operating compensation means

372 98, 372109, H01S 310

Patent

active

049512889

ABSTRACT:
Sensitive components of a laser such as a resonator mirror, a decoupling mirror or the like, are protected against an initial laser beam surge caused by the ignition of a laser with an arc discharge lamp, by a beam interrupting switch having two switch sections each carrying a filter or shutter switchable into a laser beam path in response to an arc discharge lamp ignition pulse. For a beam interruption the filters or shutters are located directly in front of and directly behind of a lasing element as viewed in the beam path direction. The switch sections are operated by a shifting mechanism responsive to the ignition pulse to bring the switch sections into the beam path and to a control signal to bring the switch sections out of the beam path or into a beam releasing position.

REFERENCES:
patent: 4087766 (1978-05-01), Mohler
patent: 4718071 (1988-01-01), Steffan

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