Faraday devices are important optical elements of high-power laser systems. Their key characteristics are greatly determined by the thermal depolarization that arises in their magneto-optical elements. A theoretical analysis of thermally induced depolarization in Faraday isolators with compensation based on crystalline materials with negative optical anisotropy parameters was carried out in this work. It is shown that the proper choice of the orientation of the crystal cut and the selection of the parameters of the compensation scheme can significantly reduce the thermally induced polarization distortions of the transmitted radiation and increase the isolation degree of the Faraday isolators at high average power. A parameter that allows comparing magnitudes of the contributions to depolarization from the thermally induced linear birefringence and from the temperature dependence of the Verdet constant and predicting the efficiency of using the scheme with compensation was introduced.

中文翻译：

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对由具有负光学各向异性参数的材料制成的磁光介质中的热致去偏振进行补偿


法拉第器件是高功率激光系统的重要光学元件。它们的关键特性很大程度上取决于磁光元件中产生的热去极化。本文对基于具有负光学各向异性参数的晶体材料的法拉第隔离器中的热致去偏进行了理论分析。结果表明，正确选择晶体切割方向和选择补偿方案参数可以显着降低透射辐射的热致偏振畸变，提高法拉第隔离器在高平均功率下的隔离度。引入了一个参数，该参数允许比较热致线性双折射和 Verdet 常数的温度依赖性对去偏振的贡献大小，并预测使用补偿方案的效率。