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Proceedings Paper

Phase conjugation properties of a-As-S-Se films
Author(s): Andris Ozols; Kaspars Ozols; Girts Ivanovs
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Paper Abstract

Light wavefront inversion (phase conjugation) in a-As-S-Se films has been studied experimentally. Phase conjugation (PC) of plane and spherical waves is carried out in a-As40S15Se45 films using degenerate four-wave-mixing (DFWM) geometry at 633 nm. In the plane wave case simultaneous PC efficiency and DE measurements have been made versus exposure time, light intensity and holographic grating period. The maximal PC efficiency was 2.3% and the minimal PC specific recording energy was 2 J/(cm2%) whereas the maximal DE was 0.9% and the minimal specific hologram recording energy was 10 J/(cm2%). The optimal grating period was 2 μm. When compared to a-Se films a-As-S-Se films exhibit lower PC efficiency but higher photosensitivity. The advantages of a PC setup for the investigation of photoinduced processes in comparison with a usual holographic setup are observed.

Paper Details

Date Published: 18 April 2006
PDF: 6 pages
Proc. SPIE 6180, Photonics, Devices, and Systems III, 61801O (18 April 2006); doi: 10.1117/12.675743
Show Author Affiliations
Andris Ozols, Riga Technical Univ. (Latvia)
Univ. of Latvia (Latvia)
Kaspars Ozols, Riga Technical Univ. (Latvia)
Girts Ivanovs, Riga Technical Univ. (Latvia)

Published in SPIE Proceedings Vol. 6180:
Photonics, Devices, and Systems III
Pavel Tománek; Miroslav Hrabovský; Miroslav Miler; Dagmar Senderákova, Editor(s)

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