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IEEE Journal of Quantum Electronics

Bistability and self-pulsing in Cerenkov-type optical parametric interactions

V. N. Lugovoǐ

Published Mar 1, 1981• 6 citations
Publisher

Abstract

A Cerenkov-type optical parametric oscillator exhibiting optical bistability, hysteresis, self-pulsing, and other effects is discussed. Noteworthy are a low threshold intensity of the pumping beam and a short characteristic time of the relaxation to steady-state light oscillations in the oscillator.
DOI
10.1109/jqe.1981.1071107

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Abstract The optical parametric oscillator involving the analogue of the inverse Čerenkov effect is considered for the case when the pumping (with a frequency ωp) consists of two plane waves incident at two different angles onto an optical waveguide (terminated by mirrors). Here, a bistability of the oscillator output emission (with frequencies ωs, ωv satisfying the relation ωs + ωr = ωp) and hysteresis phenomena caused by the bistability are shown to be realized. Also, bistability and hysteresis phenomena are shown to appear in the weaves with the frequency ωp reflected from (transmitted through) the waveguide layer, and in the waves with new frequencies 2ωs, 2ωr which are due to the transformation of the pumping in the waveguide layer.
A multiple interferometer is proposed and stimulated Raman radiation, stimulated Mandel’stam–Brillouin radiation, and Cerenkov-type optical parametric oscillation are considered in this interferometer, which is excited by an external light beam. An extremely low threshold intensity of the exciting beam is noted. Optical bistability and hysteresis, self-pulsing of the radiation intensities, amplification of amplitude-phase deviations in the incident pumping beam, limitation of the intensity of the beam transmitted by the interferometer, and nonlinear reflection of the beam from the multiple interferometer are predicted and discussed. It is also noted that the threshold for generation of the second Stokes component of stimulated Raman radiation and stimulated Mandel’stam–Brillouin radiation under the conditions discussed is usually not achieved, even for high excess of the exciting beam intensity over the threshold for generation of the first Stokes component.
A theoretical investigation is made of parametric generation of light by four-wave mixing in an optical cavity with two pump fields of different frequencies. Mixing configurations resulting in the excitation of one and three cavity modes are considered taking into account the effects of phase modulation and of depletion of the pump fields. An analysis is made of stable steady-state oscillation regimes. Calculations are reported of the intensities of the generated radiation modes at the exit from the cavity above the threshold. An analysis is made of the conditions for the appearance of optical bistability at nonzero values of the cavity detuning.