OPTICAL PARAMETRIC OSCILLATION IN THE VISIBLE SPECTRUM

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Abstract
A LiNbO3 optical parametric oscillator has been temperature tuned over the wavelength range of 7300 Å to 19,300 Å. Total output powers of the order of 103 W were observed with pump powers at 5300 Å of about 105 W. Experimental data illustrate the pronounced dependence of the generated frequencies on the pump frequency and the longitudinal mode distribution of the resonator. A proposal is described for quasicontinuous tuning of the output frequencies by means of the linear electro‐optic effect in the oscillator crystal.