钠钙玻璃的变温太赫兹色散特性研究

Research on the Variable Temperature Terahertz Dispersion Property of Soda Lime Glass

研究钠钙玻璃在不同温度下折射率和消光系数随频率的变化规律。利用时域光谱（TDS）系统测定了钠钙玻璃温度在87-520 K 范围内、频率在0.1-1.5 THz 范围内的色散曲线。通过使用Cauchy 公式拟合不同频率对应的折射率和消光系数，经验证与实验值符合较好。通过添加温度修正项，可以很好地拟合较大范围内的色散曲线。得到一种求解不同温度不同频率下钠钙玻璃折射率和消光系数的方法。

The rules of soda lime glass that the refractive index and extinction coefficient varies with the frequency at different temperatures are studied. The dispersion curves of soda lime glass within temperature range of 90~520 K and frequency range of 0.1~1.5 THz by time-domain spectroscopy （TDS） system are measured. We can get the refractive indices and extinction coefficient corresponding to different frequencies by Cauchy equation, which are consistent with the experimental results. Then it can better fit the dispersion curve in a wide range by using temperature correction factor. So a method of solving the refractive indices and extinction coefficients of soda lime glass at different temperatures and different frequencies is got.