Laser system and method with temperature controlled crystal

Details Laser system and method with temperature controlled crystal Laser system and method with temperature controlled crystal

1991-03-14

1992-03-03

Davie, James W.

Coherent light generators

Particular beam control device

Nonlinear device

372 31, 372 34, 359326, 359328, H01S 310

Patent

active

050938320

ABSTRACT:
A laser produces a light beam which is passed through a nonlinear crystal along a beam path. The noncritical phase matching axis of the nonlinear crystal is offset at a slight angle from the beam path. The angle of exit of the second harmonic light from the nonlinear crystal varies with the temperature of the crystal. A segmented photodetector detects this beam angle and generates a temperature error signal. A temperature control element receives a temperature error signal and causes the temperature of the crystal to be adjusted.

REFERENCES:
patent: 3588738 (1971-06-01), Goodwin
patent: 3858056 (1974-12-01), Melamed et al.
M. K. Chun et al., Applied Physics Letters, vol. 55, pp. 218-220, Jul. 17, 1989.
P. Gunter et al., Applied Physics Letters, vol. 35, pp. 461-463, Sep. 15, 1979.
W. J. Kozlovsky et al., IEEE Journal of Quantum Electronics, vol. 24, No. 6, pp. 913-919, Jun. 1988.
W. J. Kozlovsky et al., Optic Letters, vol. 12, No. 12, pp. 1014-1016, Dec. 1987.
A. Ashkin et al., "Resonant Optical Second Harmonic Generation and Mixing", IEEE Journal of Quantum Electronics, QE-2, pp. 109-124.
W. J. Kozlovsky et al., Applied Physics Letters, vol. 56, No. 23, pp. 2291-2292, Jun. 1990.

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