Stability of steady of a bistable system on the basis of increasing absorption in the layout with a lateral supply of a part of a light signal transmitted through a crystal is analyzed. The possibility of self-switching of the system from the upper to the lower state is demonstrate. The nature of the instability is associated with the origination of a bifurcation due to the presence of a retardation resulting from the passage of a light signal through the feedback loop. An efficient technique for the simulation of problems of interaction of optical radiation with a nonlinear medium in the presence of a feedback loop is proposed.
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