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Liquid crystal Fourier transform spectrometer

机译:液晶傅立叶变换光谱仪

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Abstract: A new high throughput imaging spectrometer is described that utilizes a digitally switched polarizing interferometer to sample the complex autocorrelation of the input spectrum. Using a single filter stage and high speed digital liquid crystal switches, the spectrometer can provide rapid measurements of power spectra using a simple, easily driven, light efficient structure. The spectrometer is well suited to visibleear infrared operation, due to its use of path-length differences in crystals, rather than free space path length differences. The spectrometer provides accurate and stable steps in path length difference from zero to hundreds of waves. !10
机译:摘要:描述了一种新的高通量成像光谱仪,该光谱仪利用数字开关偏振干涉仪对输入光谱的复杂自相关进行采样。使用单个滤波器级和高速数字液晶开关,该光谱仪可以使用简单,易于驱动的光高效结构快速测量功率谱。该光谱仪非常适合可见/近红外操作,因为它使用了晶体的光程长度差异,而不是自由空间光程长度差异。光谱仪在从零到几百个波的路径长度差中提供了准确而稳定的步长。 !10

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