冰洲石晶体Wollaston棱镜分束角的温度效应

为了了解温度变化对冰洲石晶体W0llaston棱镜分束角的影响,首先需决定棱镜分束角的两个因素,即棱镜的结构角和晶体中o光、e光的主折射率;然后从温度对这两个因素的影响出发,从理论上对冰洲石晶体Wollaston棱镜中的o光、e光分束角的温度效应进行了研究。结果表明,随着温度的升高,两分束角减小,但o光减小的幅度要比e光大得多。建立了实验测试系统,实验测试结果与理论分析结果相吻合。

Study on the temperature influence on the divergence angles of the calcite Wollaston prism

For understanding the temperature influence on the divergence angles of the calcite Wollaston prism,structure angle and main refraction index are two key factors.From considered temperature effect of the two factors,the influence on the divergence angle of calcite Wollaston prism is studied theoretically.The divergence angles decrease with increasing temperature, but the divergence angle of o-light decreases more quickly than that of e-light.The testing system is established to verify the above results,and experimental results are coincident with theoretical analysis.