Abstract

From the frequency dependence of the optical transmission characteristics of Raman–Nath acoustic-optic diffraction, the dynamic equations and steady-state solutions of a two-dimensional Raman–Nath acousto-optic bistable system are derived. In this system, feedback is realized by use of a diffracted light beam to control the frequency of the acoustic-optic driver. The curves of light output versus input corresponding to several orders of the diffracted beams are obtained by theoretical analysis. They can all lead to bistability. The amount of hysteresis is a function of the order of the diffracted beam, the bias frequency, and the feedback coefficient. Experimental results are presented and compared with theoretical analyses.

© 1997 Optical Society of America

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