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physica status solidi (b)

New Mechanism of Intrinsic Bistability of Nonlinear Slugged Structures under the Action of Repetitive Pulse Excitation

A. V. Gainer, Gregory I. Surdutovich

Published Dec 1, 1988• 2 citations
Publisher

Abstract

Abstract A new type of the cavityless bistability is proposed where the nonlinear medium does not show intrinsic bistability under action of a continuous input signal but shows bistability under action of a time‐dependent input signal. A strict criterion for the observation of such a bistability is given. It depends on the shape of the temporal response of the nonlinear medium under action of the isolated rectangular input pulse.

DOI
10.1002/pssb.2221500230

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Abstract A new type of the cavityless bistability is proposed where the nonlinear medium does not show intrinsic bistability under action of a continuous input signal but shows bistability under action of a time‐dependent input signal. A strict criterion for the observation of such a bistability is given. It depends on the shape of the temporal response of the nonlinear medium under action of the isolated rectangular input pulse.
We experimentally demonstrate a fundamentally new type of intrinsic optical bistability that requires no resonant optical cavity. Operation is based on mutual self-focusing of counterpropagating laser beams in a nonlinear medium. We propose and experimentally demonstrate a fundamentally new type of optical bistability. 1 The operation of this new class of devices is based on self-focusing of light; the feedback required for bistability is provided by an apertured retroreflector. These devices exhibit intrinsic bistability (the feedback is optical) and are related to nonlinear waveguide devices proposed earlier. 2 Self-focusing occurs when a light beam having a nonuniform spatial profile (such as a Gaussian laser beam) and sufficient intensity propagates through a nonlinear medium having an intensity-dependent index of refraction. 3 Previously proposed devices that exhibited
A comprehensive analysis of the interaction of pulsed light beams with nonlinear planar resonators is presented, covering both arbitrary types of nonlinearity and arbitrary states of polarization of the incident field. The characteristic of the optical response is discussed in its dependence on the crucial parameters of the resonator system as well as of the input pulse. Numerical results are given for the transmission response of a multiple-film configuration under oblique incidence, which is endowed with a dynamic, saturable nonlinearity. In particular, conditions for optical bistability to occur are derived.