Title :
Diffraction of two optical beams by a SAW in an isotropic solid
Author :
Tsarev, Andrei V.
Author_Institution :
Inst. of Semicond. Phys., Novosibirsk, Russia
Abstract :
This paper for the first time explores the diffraction of two spatially separated parallel light beams by reflection from a SAW, propagating in isotropic semi-space. In the analysis the attenuation and dispersion of SAW, the interference of light beams and scattering by different sites of acoustic wave are considered. The analytical expressions predict low-frequency oscillation of the resulting diffracted fields as observed in previous experiments. Using measurements of period oscillation of diffracted intensity vs. SAW frequency, the SAW dispersion curve and phase and group velocities were determined.
Keywords :
acousto-optical effects; light diffraction; light interference; surface acoustic waves; SAW; dispersion curve; group velocities; isotropic semi-space; isotropic solid; light beam interference; low-frequency oscillation; optical beam diffraction; period oscillation; phase velocities; scattering; spatially separated parallel light beams; Acoustic beams; Acoustic diffraction; Acoustic propagation; Acoustic reflection; Optical beams; Optical diffraction; Optical propagation; Optical reflection; Solids; Surface acoustic waves;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
