Bistability and noncommutative behavior of multiple-beam self-pulsing and self-pumping in BaTiO₃

Abstract

Two mutually incoherent beams from a multilongitudinal-mode Ar⁺ laser have been used as simultaneous inputs to a self-pumped barium titanate crystal. With one beam positioned for self-pumping and the other for self-pulsing, the overall output behavior is seen to have two stable states that depend on the previous history of single-beam self-pumping or self-pulsing. During one of these output states, a spontaneously generated continuous loop of light is seen in the crystal, providing a coupling mechanism between the two mutually incoherent beams.

© 1987 Optical Society of America

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