Power meter for high energy lasers

Details Power meter for high energy lasers Power meter for high energy lasers

1981-03-23

1983-04-26

Arnold, Bruce Y.

Optics: measuring and testing

Photometers

356234, 374 32, G01J 104, G01J 142, G01K 1700

Patent

active

043811485

ABSTRACT:
A power meter for non-destructively measuring the power of a high energy er beam. The power meter includes a cell disposed in the flow path of a gas containing a laser radiation-absorbing species. The absorption coefficient of the absorbing species is small enough to allow the beam to pass through the cell essentially unaltered. The concentration of the absorbing species is modulated to modulate its absorption of the laser beam power and produce acoustic waves in the gas which can be detected and measured to give an absolute measurement of the power in the high energy laser beam.

REFERENCES:
patent: 3575048 (1971-04-01), De Benedictis
patent: 3670570 (1972-06-01), Briones
patent: 3783685 (1974-01-01), Zeiders, Jr. et al.
patent: 4184768 (1980-01-01), Murphy et al.
patent: 4187026 (1980-02-01), Schaffer et al.
patent: 4234258 (1980-11-01), Margolis et al.
patent: 4236827 (1980-12-01), Horiba et al.

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