Laser power meter

Details Laser power meter Laser power meter

1982-04-05

1984-04-03

Goldstein, Herbert

Thermal measuring and testing

Calorimetry

Total radiant energy or power measurement

G01K 1700

Patent

active

044405065

ABSTRACT:
A laser power meter is disclosed which includes a housing, an optical win in the housing through which the laser radiation is transmitted, and an optic in the housing in the path of the laser radiation. The optic absorbs a portion of the incident laser radiation, the absorbed laser radiation being converted into heat, and reflects a portion of the incident laser radiation. The heat generated at the optic is transferred to a cooling fluid flowing through a flow channel adjacent the optic. The width of the flow channel is defined by the space between the optic and a gap control disk. Apparatus is provided for urging the gap control disk toward the optic in order to maintain the width of the flow channel in the event the width of the flow channel changes as a result of thermal distortions suffered by the optic.

REFERENCES:
patent: 2560536 (1951-07-01), Althouse
patent: 3464267 (1969-09-01), Ehrlich et al.
patent: 3596514 (1971-08-01), Mefferd et al.
patent: 3783685 (1974-01-01), Zeiders, Jr. et al.
patent: 3918303 (1975-11-01), Zakhidov et al.
patent: 4037470 (1977-07-01), Mock et al.
patent: 4194119 (1980-03-01), MacKenzie

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