为了测试温度对石英晶体旋光性的影响,采用陶瓷平板型半导体制冷器件作为温控器,设计、建立了石英晶体旋光性温度效应的测试系统,对石英晶体旋光特性的温度效应进行了测试研究:在-10～60 ℃的温度范围内,从实验上测试了石英晶体的旋光角随温度的变化。实验结果表明:对于确定的单色光,随着温度的升高石英晶体的旋光率增大。根据测试结果,通过求解塞耳迈耶尔方程和四次拟合的方法,得出了塞耳迈耶尔方程的常数与温度的关系式,从而可以得出任意温度下不同波长对应的石英晶体的旋光率。

Using ceramic plate semiconductor refrigerator as temperature control unit the thermal effect of the rotatory power of quartz crystal is investigated. The testing system for the thermal effect of the rotatory power of quartz crystal is designed and the rotatory power at different temperature ranging from -10 to 60 ℃ is measured. The results show that, for given homogeneous light,the rotatory power increases with increasing temperature. Through Sellmeier equation and quartic fit method, the relation of Sellmeier equation's coefficient to temperature is calculated, thereby the rotatory power of quartz crystal at different wavelength and random temperature can be obtained.