Investigation phase in case of Bragg coupling

These results of investigation have show higher controlling possibility by light waves diffraction phases in case Bragg coupling Diffraction of isotropic, anisotropic interaction which take place simultaneously. The occurrence source These distinction case of interaction produced from additional phase shift of light pass through the ultrasonic waves meshes as diffraction grating ,and controlling by parameters dual interaction Through (Raman-Nath) Parameters. This evident variation in light waves diffraction phases (0,i, a) which reach to () with wide range value of Raman-Nath Parameters (1.95 i v ,a 1.7 ) and unappearance of jump in phase of diffracted wave light in any order of diffraction must be to take in to consideration when the modern (Acousto-optics) devices design.