Optical constants of far infrared materials. I: analysis of channeled spectra and application to mylar.
Optical constants of far infrared materials. I: analysis of channeled spectra and application to mylar.
复制标题
远红外材料的光学常数。
作者：
E. V. Loewenstein;D. Smith
提出了一种利用傅里叶光谱分析沟道光谱以确定光学常数的方法。傅里叶光谱学的使用是该方法的组成部分，因为干涉图中的通道化谱的单个签名可以用来产生折射率的实部和虚部。用来处理数据的方法允许使用过零点的位置来计算真实的折射率，而不是不能以相同精度定位的最大值和最小值。讨论了过零点阶数的确定，以及照明收敛的修正。给出了Mylar，一种双折射材料，在50-250厘米(-1)区域的结果。
A method is presented for analyzing channeled spectra to determine optical constants, using fourier spectroscopy. The use of fourier spectroscopy is integral to the method, for a single signature of the channeled spectrum in the interferogram may be used to yield both real and imaginary parts of the refractive index. The method employed for handling the data permits use of the position of zero crossings to calculate the real refractive index rather than maxima and minima which cannot be located with the same precision. Determination of the order number of the zero crossings is discussed, as is the correction for the convergence of the illumination. Results are given for Mylar, a birefringent material, in the 50-250 cm(-1) region.