Laser apparatus

Details Laser apparatus Laser apparatus

1989-12-14

1991-05-28

Gonzalez, Frank

Coherent light generators

Particular temperature control

372 33, 372 21, H01S 310

Patent

active

050200631

ABSTRACT:
The frequency conversion element for producing light of higher harmonic wave from the fundamental wave laser oscillator is provided with strain gauges 4, 4 or piezoelectric elements 4', 4' or thermo-couples 6, 6, output signals whereof are led to a signal processor and to a comparator, thereby to issue a control signal to decrease power of the input laser light, to prevent thermal breakdown of the frequency conversion element.

REFERENCES:
patent: 4025875 (1977-05-01), Fletcher et al.
patent: 4181899 (1980-01-01), Liu
patent: 4400682 (1983-08-01), Ishibashi

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