Mutually pumped phase conjugate mirror using cross polarized photorefractive coupling

This paper presents a new proposal for a mutually pumped phase conjugate mirror (MPPCM) using cross polarization. In the cross polarized MPPCM, two light beams, whose polarizations are orthogonal to each other, incident on a photorefractive crystal, causing photorefractive interaction to generate ph...

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Bibliographic Details
Published in:Optics and laser technology 2007-06, Vol.39 (4), p.881-884
Main Authors: Okamoto, Atsushi, Honma, Satoshi, Uemura, Shunsuke, Ito, Terumasa
Format: Article
Language:English
Subjects:
Exact sciences and technology
Four-wave mixing
Fundamental areas of phenomenology (including applications)
Optical elements, devices, and systems
Optics
Phase conjugation
Photorefractive effect
Physics
Reflectors, beam splitters, and deflectors
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Summary:This paper presents a new proposal for a mutually pumped phase conjugate mirror (MPPCM) using cross polarization. In the cross polarized MPPCM, two light beams, whose polarizations are orthogonal to each other, incident on a photorefractive crystal, causing photorefractive interaction to generate phase conjugate waves with an orthogonal polarization to an incident beam. The use of Ar + laser and BaTiO 3 crystal in an experiment for the cross polarized MPPCM found that diffraction efficiency for an extraordinary beam is about 20%. As opposed to a conventional parallel polarized MPPCM in which the use of a beam splitter is required to separate a diffraction beam, the cross polarized MPPCM can efficiently extract phase conjugate waves by means of a polarized beam splitter, demonstrating the advantage of substantially improved efficiency.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2005.12.004