A highly efficient, picosecond, narrow-band, widely tunable optical parametric oscillator using a temperature-tuned LBO crystal synchronously pumped by cw, Q-switched, mode-locked pulses is described. A signal conversion efficiency of 30% with an output linewidth of 0.14 nm is obtained. The latter can be further reduced to 0.01 nm.
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Zhou et al. (1993) studied this question.
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