Highly effective acoustooptic diffraction of light by multifrequency sound using a nonaxial deflector
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- Antonov, S.N., Vainer, A.V., Proklov, V.V. et al. Tech. Phys. (2008) 53: 752. doi:10.1134/S1063784208060145
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The subject of investigation is multiple-beam Bragg diffraction of light, i.e., the formation of a highly effective multiple-beam field representing a superposition of equidistant monochromatic acoustic waves with determinate phases and amplitudes using a nonaxial TeO2 deflector. It is shown theoretically and experimentally that the anisotropic character of interaction considerably changes the basic parameters of multiple-beam diffraction (compared with the isotropic case): the net diffraction efficiency grows to 100%, and the frequency band expands noticeably. A modulator splitting the initial laser radiation into five beams of equal intensity with a net efficiency approaching 100% is designed.