Phase conjugation properties of a-As-S-Se films

Andris Ozols; Kaspars Ozols; Girts Ivanovs

doi:10.1117/12.675743

18 April 2006 Phase conjugation properties of a-As-S-Se films

Andris Ozols, Kaspars Ozols, Girts Ivanovs

Proceedings Volume 6180, Photonics, Devices, and Systems III; 61801O (2006) https://doi.org/10.1117/12.675743
Event: Photonics, Devices, and Systems III, 2005, Prague, Czech Republic

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.

Citation Download Citation

Andris Ozols, Kaspars Ozols, and Girts Ivanovs "Phase conjugation properties of a-As-S-Se films", Proc. SPIE 6180, Photonics, Devices, and Systems III, 61801O (18 April 2006); https://doi.org/10.1117/12.675743

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