Low distortion mirror for high power laser beams including a rea

Details Low distortion mirror for high power laser beams including a rea Low distortion mirror for high power laser beams including a rea

1977-01-31

1978-07-11

Henry, Jon W.

350166, G02B 508, G02B 528

Patent

active

040998533

ABSTRACT:
A reflector for a high power laser beam comprising a low absorption, transmitting substrate with a rear reflective coating. The reflector element consisting of the substrate and rear coating is mounted within a housing using low stress supports to prevent deformation of the reflective element and resulting loss in optical beam quality in the reflected laser beam. Coolant is sprayed onto the rear surface of the reflector element preferably in a pattern which modulates the coolant flow volume in accordance with the intensity distribution across the incident laser beam so as to maintain uniform heating in the reflective element and further to prevent distortion in the reflected beam.

REFERENCES:
patent: 1530441 (1925-03-01), Thomson
patent: 2552184 (1951-05-01), Koch
patent: 3836236 (1974-09-01), Kirk et al.
patent: 3887261 (1975-06-01), Spiller

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