We present comprehensive experimental measurements and analysis of anisotropy of the acoustic wave velocities for Tl3AsS4 crystals, including the obliquity and nonorthogonality of the acoustic waves, and the deviations from purely longitudinal and transverse polarization types. We have found that the crystals under analysis are characterized by rather low transverse wave velocities v(23) and v(32), which are both equal to 630 m/s. It is shown that the efficiency of acoustooptic (AO) interactions in Tl3AsS4 can be notably increased when providing anisotropic interaction with the slowest transverse acoustic wave. Under the previously mentioned conditions, the AO figure-of-merit can be estimated to be extremely high, i.e., approximately 3 x 10(-12) s(3)/kg. (C) 2015 Optical Society of America
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机译：我们提供Tl3AsS4晶体的声波速度各向异性的综合实验测量和分析，包括声波的倾斜度和非正交性，以及与纯纵向和横向极化类型的偏差。我们发现，所分析的晶体的特征在于相当低的横波速度v（23）和v（32），均等于630 m / s。结果表明，当与最慢的横向声波提供各向异性相互作用时，Tl3AsS4中声光（AO）相互作用的效率可以显着提高。在前面提到的条件下，AO的品质因数估计很高，即大约3 x 10（-12）s（3）/ kg。 （C）2015年美国眼镜学会
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