6533b7d9fe1ef96bd126cb8d
RESEARCH PRODUCT
<title>Phase conjugation properties of a-As-S-Se films</title>
Girts IvanovsKaspars OzolsAndris OzolsAndris Ozolssubject
PhysicsWavefrontHolographic gratingbusiness.industryPlane waveHolographyGratinglaw.inventionFour-wave mixingLight intensityOpticslawbusinessPhase conjugationdescription
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.© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-03-03 | SPIE Proceedings |