EXPERIMENTAL-STUDY OF SMALL-SIGNAL AMPLIFICATION IN BRAGG ACOUSTOOPTIC BISTABLE SYSTEM

The external small signal amplification ability of the Bragg acoustoop tic system has been studied in this paper. It has been proven by exper iment that there are saturation and resonance phenomena in the amplifi cation. Bifurcation parameters at the bifurcation points are decreased by external simple harmonic signals. At the period-2 bifurcation poin t, small signal amplification energy is mainly from the period-2 compo nent. External signals have the ability of frequency pulling and synch ronising period-2 frequency. These phenomena have great significance c oncerning bifurcation and chaos. (C) 1998 Elsevier Science Ltd.