In the present paper the thermodynamic and phenomenological descriptions of the crossflow piezo-electrooptic effect in crystals have been made. For example the necessary experimental measurements of this effect have been carried out in the lithium tantalate crystals. For these crystals at first the P₃₃₁₁₃ - P₁₁₁₁₃ = −4, 6 • 10⁻¹⁹ m³/ N•V absolute coefficients difference of crossflow piezo-electrooptic effect were determined by two measurement methods.
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机译：在本文中，对晶体中的流通压电电光效应进行了热力学和现象学描述。例如，已经在钽酸锂晶体中进行了必要的实验测量。对于这些晶体，首先，P₃₃₁₁₃-P₁₁₁₁₃= −4，通过两种测量方法确定了流通压电电光效应的6•10 10 m 3 / N•V绝对系数差。
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