High power optical second harmonic generation in non-linear crys

Details High power optical second harmonic generation in non-linear crys High power optical second harmonic generation in non-linear crys

1977-12-05

1980-01-01

Sikes, William L.

Oscillators

Molecular or particle resonant type

331 945N, 331 945S, H01S 313

Patent

active

041818997

ABSTRACT:
Harmonic generation in a nonlinear crystal, arising out of high power optical energy produced by a neodymium-doped glass laser operating at 1.06 micrometers wavelength, is normally limited by crystal self-heating due to thermal-optical effects that cause phase-mismatch and reduce conversion efficiency. This limitation is overcome by tuning the laser wavelength to compensate for the phase-mismatch and thereby permit improved conversion efficiency for harmonic generation. The tuning is varied in accordance with sensed crystal temperature.

REFERENCES:
patent: 3679999 (1972-07-01), Chernoch
patent: 4019159 (1977-04-01), Hon et al.
patent: 4025875 (1977-05-01), Fletcher
Hon, Electrooptical Compensation for Self-Heating in CD*A During Second-Harmonic Generation, IEEE J. Quant. Elect. QE12, No. 2, (Feb. 1976), pp. 148-151.

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