Efficient phase conjugation of 40-psec Nd:YAG laser pulses in Eastman Kodak mode-locking dyes A 9740 and A 9860 has been obtained. Variation of the phase-conjugate reflectivity with pump intensity is quadratic, without saturation effects, and variation with dye concentration agrees with a simple analytical model. We have used this reflectivity to obtain self-sustained oscillation and mode locking of a novel self-pumped phase-conjugate laser resonator.
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Vanherzeele et al. (1981) studied this question.
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