Abstract

A ring self-pumped phase-conjugator mirror with an injected signal and an applied external electric field was studied in an experiment with a photorefractive strontium barium niobate crystal. Competition between the injected signal and free oscillation caused temporal instabilities in the output beam. Periodic and erratic pulsations of output intensity were observed as a function of the injected beam intensity and electric field strength. Numerical simulations of the theoretical model of this system confirmed the existence of the regime of unstable behavior.

© 1991 Optical Society of America

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