25 November 1992 Coherent and incoherent processes of acousto-optic interaction on the rough surface
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Proceedings Volume 1844, Acousto-Optics and Applications; (1992) https://doi.org/10.1117/12.131928
Event: Acousto-Optics and Applications, 1992, Gdansk-Jurata, Poland
Abstract
Condition of the surface where acousto-optic interaction occurs defines the nature of the process in many respects. Specifically, the light scattering on the rough changing in time surface loses its coherence, that leads to efficiency of known interference and holographic methods of small acoustic perturbation registration decreases. Results of theoretical and experimental investigations of acoustic modulation, both space and frequency spectra of the light scattered by essentially incoherent means on the rough chaotic moving surface, are presented. It is shown that the magnitude of sound modulation of the scattered light energetic pattern is defined not only by the interface condition, but also by the light characteristics. Further, the possibility of coherent combination frequency Bragg scattering is considered. Such processes occur as a result of acousto-optic interaction on a statistically rough surface with the typical sizes of roughness much larger with respect to the wavelength of both light and sound. In case of commensurable wavelengths of optic and acoustic fields, we arrange the phenomenon with similar phase conjunction of optic radiation on sound stimulated chaotic moving rough surfaces.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Igor B. Esipov, Igor B. Esipov, } "Coherent and incoherent processes of acousto-optic interaction on the rough surface", Proc. SPIE 1844, Acousto-Optics and Applications, (25 November 1992); doi: 10.1117/12.131928; https://doi.org/10.1117/12.131928
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