FORCED OSCILLATION MODEL OF OPTICAL BISTABILITY.

This paper presents a new model of optical bistability (OB). In view of the ideas of the mean field approximation, the slow envelope approximation and the adiabatic approximation, the OB system can be regarded as a 'box'. Compared with the theory of nonlinear oscillation, we find that the courses in different OBS's - including different substances and different cavities (E-P. C. or R. C. ) - can be described consistently, in both steady state and temporal respect, with an appropriate nonlinear forced oscillation equation, in which the coefficients are measurable macroscopical parameters. Using the method of slowly changing phase and amplitude in oscillation theory, we develop the equation into a coupling and autonomous dynamic equation set of phase and amplitude. The general solutions of the equation set for OB steady state and transient behavior are obtained conveniently from this form. Several concrete results in literature are compared as the examples for the verification of the wide applicability of this model.