This article is cited in 1 paper

Nonlinear optical phenomena

Self-pumped phase conjugation of laser beams in a nematic liquid-crystal layer with nonreciprocal feedback

O. L. Antipov, A. S. Kuzhelev

Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod

Abstract: A study is reported of self-pumped phase conjugation by near-forward stimulated scattering of a beam from a quasi-cw YAG:Nd laser in a layer of a nematic liquid crystal without an absorbing dye but in the presence of a nonreciprocal feedback loop. The phase nonreciprocity of this loop is realised by a polarisation rotator and a phase plate. A significant reduction in the threshold of generation of a phase-conjugated wave is reported for the case of a π/2 phase shift between the optical pump and scattering waves travelling in opposite directions along the feedback loop.

PACS: 42.65.Hw, 42.65.Ky

Received: 31.12.1995

 English version: Quantum Electronics, 1995, 25:1, 49–52

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