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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Energetically Effective Sensitive Four-Wave Phase Conjugating Mirrors

N. F. Andreev, V. I. Bespalov, M. A. Dvoretskii, Guerman A. Pasmanik

Published Jan 18, 1985• 0 citations
Publisher

Abstract

The method of the four-wave phase conjugation of weak light signals with a large coefficient of transformation of the pump wave energy into the conjugated wave is studied.
DOI
10.1117/12.942448

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The characteristics of four-wave-interaction mirrors utilizing organic solvents were investigated experimentally using YAG:Er3+ laser radiation (λ = 2.94 μm). The highest reflection coefficient of 500% was obtained for benzine at an energy density of 2 J/cm2 under Q-switched conditions. It was found that distortions introduced by inhomogeneous NaCl phase plates could be compensated by phase conjugation. The longitudinal coherence length of the YAG:Er3+ laser radiation was determined from the dependence of the reflection coefficient of a four-wave interaction mirror on the difference between the paths of the signal wave and the parallel pump wave.