Optical frequency doubler using electro-optic crystal with impro

Details Optical frequency doubler using electro-optic crystal with impro Optical frequency doubler using electro-optic crystal with impro

1975-10-14

1977-04-19

Moskowitz, Nelson

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

350160R, 331 945M, H01S 313, H04B 900

Patent

active

040191591

ABSTRACT:
An optical frequency doubling arrangement is disclosed in which the indices of refraction of light in a frequency doubling electro-optic crystal are controlled by both electric field pulses applied across the crystal and heater control pulses for controlling the temperature of an oven in which the crystal is mounted. Both the electric field pulses and the heater control pulses have a duty cycle determined by the detected optical power output from the crystal at the desired double frequency, the heater control pulses being responsive to the measured oven temperature as well. The arrangement is especially suitable for doubling the frequency of 1.06 .mu.m laser beams.

REFERENCES:
patent: 3675022 (1972-07-01), Nelson et al.
patent: 3793595 (1974-02-01), Russo et al.
patent: 3858056 (1974-12-01), Melamed et al.
patent: 3898583 (1975-08-01), Shuey
patent: 3928822 (1975-12-01), Chenoweth et al.
patent: 3944811 (1976-03-01), Midwinter
Chenoweth et al., "High Data Rate Modulator", 2/73, pp. 1-8, 13-16, Tech. Report AFAL-TR-72-427.
Brand, "Optical Modulator System," 10/72, pp. 11, 19-22, Final Report, NAS 5-11474.
Ross, "Optical Communications in Space," 10/74, pp. 374-382, Optical Engineering, vol. 13, No. 5.

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