Programmable power attenuator for continuous CO.sub.2 lasers

Details Programmable power attenuator for continuous CO.sub.2 lasers Programmable power attenuator for continuous CO.sub.2 lasers

1976-09-17

1977-12-27

Henry, Jon W.

Oscillators

Relaxation oscillators

350318, 331 945Q, G02B 524

Patent

active

040652076

ABSTRACT:
A device which will attenuate a 10.6 micron wave length light beam from 1% of the original intensity. The original intensity can be as high as 1000 watts. The unit is an absorption cell of variable path length filled with a gaseous mixture of sulfur hexafluoride and nitrogen at a total of one atmosphere. Power attenuation is accomplished by SF.sub.6 - absorption and energy exchange to N.sub.2 or walls. The output is controlled by a motor which moves one of the two windows thus changing the absorption path.

REFERENCES:
patent: 2806957 (1957-09-01), McDonald
patent: 3560077 (1971-02-01), Sooy et al.
patent: 3572907 (1971-03-01), Cindrich
patent: 3764937 (1973-10-01), Skolnick et al.
patent: 3914010 (1975-10-01), Zeller

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