Acousto-Optic Characteristics in Media with Strong Acoustic Anisotropy
A.S. Voloshin and V.I. Balakshy
Faculty of Physics, Moscow State University, Leninskiye Gory, 119991 Moscow, Russia
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Calculations of acousto-optic diffraction spectrum are fulfilled on the basis of modified Raman-Nath equations which take into consideration the acoustic energy walk-off. It is shown that, depending on acousto-optic interaction geometry, the walk-off can change essentially angular and frequency ranges of the interaction. Coefficients of broadening are put in practice as characteristics of the walk-off influence. The calculations are carried out for 5° crystal cut of a paratellurite crystal in wide ranges of ultrasound frequencies and Bragg angles.

DOI: 10.12693/APhysPolA.127.60
PACS numbers: 78.20.hb, 42.79.Jq