Abstract
Acousto-optical figure-of merit has been investigated for KGd(WO4)2 crystal, which is applicable to control high intensity laser radiation. Using the data on acoustic velocities obtained earlier and the experimentally determined coefficients of light diffraction on acoustic waves, we have calculated for the first time 12 elements of the upper half of the elasto-optic matrix. This new data permitted to calculate angular dependence of acousto-optical figure-of-merit with respect to the light polarization for “isotropic” diffraction and to find the optimum geometry, which ensures maximum diffraction efficiency.
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