Abstract

A method of light modulation in a wide acoustic frequency band by means of light transmission through two identical acousto-optic (AO) Bragg cells, in which acoustic waves propagate in opposite directions, is proposed and investigated. The peculiarities of the method make it possible to compensate the shift between the interfering beams caused by beam deviation during the AO diffraction process. The method is implemented experimentally with two AO cells fabricated from paratellurite for high-frequency light modulation for a wavelength of 0.63 μm.

© 2019 Optical Society of America

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