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Proceedings Paper

Optical suppression of a double-phase conjugation in a photorefractive Bi12TiO20 waveguide
Author(s): Erik Raita; Alexei A. Kamshilin; Raimo Veil Johannes Silvennoinen; Timo Jaeaeskelaeinen
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Paper Abstract

Optical suppression of a double phase conjugation has been demonstrated in a photorefractive Bi12TiO20 waveguide-like crystal. A dynamic phase conjugation mirror was recorded by two mutually coherent He-Ne laser beams coming from the one side of the samples and the beam of an independent laser from the opposite side. In the absence of any one of coherent input beams the other one generates the phase-conjugate of the third beam. The situation changes when both coherent beams are simultaneously present. The phase conjugated beam, which was produced by one of the coherent pumps, could either be enhanced or almost completely suppressed by introducing the second pump beam into a system. The final intensity of a phase conjugated beam depends on the polarization angle of the second beam compared with the first one. Almost total suppression is observed when the input beams were orthogonally polarized.

Paper Details

Date Published: 27 December 1996
PDF: 4 pages
Proc. SPIE 2969, Second International Conference on Optical Information Processing, (27 December 1996); doi: 10.1117/12.262650
Show Author Affiliations
Erik Raita, Univ. of Joensuu (Finland)
Alexei A. Kamshilin, Univ. of Joensuu (Finland)
Raimo Veil Johannes Silvennoinen, Univ. of Joensuu (Finland)
Timo Jaeaeskelaeinen, Univ. of Joensuu (Finland)

Published in SPIE Proceedings Vol. 2969:
Second International Conference on Optical Information Processing

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