%0 Journal Article
%T Specific directions of ultrasound propagation in double potassium tungstates for light modulation.
%A Mazur MM
%A Mazur LI
%A Pozhar VE
%J Ultrasonics
%V 73
%N 0
%D 01 2017
%M 27690236
%F 4.062
%R 10.1016/j.ultras.2016.08.008
%X Acousto-optical characteristics of double potassium tungstates are analyzed and specific directions for light modulation are found. First, an important subgroup of elasto-optic coefficients of KYb(WO4)2 and KLu(WO4)2 crystals are calculated with use of experimental data. It is revealed that with proper choice of ultrasound direction the acousto-optical figure-of-merit approximately 2 times exceeds the maximum value detected in previous experiments. Another unique direction is determined, which permits modulation of randomly polarized light. The elasto-optic characteristics of KYb(WO4)2 and KLu(WO4)2 crystals are compared to those of previously investigated materials of the same crystal group: KY(WO4)2, KGd(WO4)2.