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Abstract：
The elastic and photo-elastic characteristics of four laser crystals KY(WO₄)₂, KGd(WO₄)₂, KYb(WO₄)₂, and KLu(WO₄)₂ are presented. The first pair was reported early, and the last two materials have been investigated for the first time. The full matrix of elastic constants of these monoclinic crystals has been determined. Also, acousto-optical figure of merit for all the basic geometries of isotropic diffraction has been measured. It is proved that potassium rare-earth tungstates has rather good acousto-optical properties and particularly can take place of fused silica in technical applications required high power laser radiation. All the results demonstrate good prospect of these optically bi-axial laser crystals for development of new effective acousto-optical devices.
摘要：
四种激光晶体KY(WO)²的弹性和光弹性特性，KGd(WO)2,KYb(WO)2,和KLu(WO)2表示。第一对早期报道，最后两份材料是第一次调查。已经确定了这些单斜晶体的弹性常数的完整矩阵。此外，已测量了各向同性衍射的所有基本几何形状的声光品质因数。事实证明，钨酸稀土钾具有良好的声光性能，特别是在需要高功率激光辐射的技术应用中可以代替熔融石英。所有结果都证明了这些光学双轴激光晶体在开发新的有效声光器件中的良好前景。
