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A LiIO3 crystal, placed inside a doubly resonant oscillator, was pumped with the second harmonic of a Q-switched ruby laser. A 0.415- to 2.1-μm tuning range for both signal and idler was obtained. The conversion efficiency from pump to signal power amounts to 8%. The peak power of the signal radiation was 10 kW and the pulse duration was 5 nsec.
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Nath et al. (1973) studied this question.
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