Transient degenerate four-wave mixing in a saturable Nd:YAG amplifier: the effect of pump-beam propagation

Abstract

A transient model of degenerate four-wave mixing in saturable amplifiers is developed for calculation of the phase-conjugate reflectivity in the weak-probe-beam limit. Our model takes into account the laser amplification of all the interacting beams together with the wave-mixing process between the two counterpropagating pump waves. Experimental investigations are made in a flash-lamp-pumped Nd:YAG amplifier with nanosecond pulses at 1.06 μm. A reflectivity of 22% is achieved when all the waves interfere within the laser medium.

© 1994 Optical Society of America

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