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首页> 外文会议>Infrared systems and photoelectronic technology IV >False signature reduction in infrared channeled spectropolarimetry
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False signature reduction in infrared channeled spectropolarimetry

机译：红外通道光谱极化仪中虚假特征的减少

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摘要

Channeled spectropolarimetry, first developed by K. Oka, is capable of measuring all the Stokes parameters from a single modulated spectrum. We present a theoretical means for improving the spectral resolution of channeled spectropolarimetry by at least a factor of four. Especially valuable in the infrared due to atmospheric absorption features, this method simultaneously provides for the correction of aliasing artifacts from the channels used for the determination of the Stokes parameters. The technique is experimentally demonstrated using a Fourier transform infrared spectrometer and two multiple-order Yttrium Vanadate (YVO_4) retarders. This approach is implemented with consideration of crystal dichroism effects, and reconstructions are compared with conventional channeled spectropolarimetric reconstructions from the same system. Additional results, produced by using Cadmium Sulfide (CdS) retarders, provide demonstration of the technique across the infrared.
机译：通道光谱极化仪由K. Oka首先开发，能够从单个调制光谱中测量所有斯托克斯参数。我们提出了一种理论方法，可将通道光谱偏振法的光谱分辨率提高至少四倍。由于大气吸收特征，该方法在红外方面特别有价值，该方法同时提供了用于确定斯托克斯参数的通道中的混叠伪影的校正。使用傅立叶变换红外光谱仪和两个多阶钒酸钇（YVO_4）缓凝剂通过实验证明了该技术。考虑到晶体二色性效应来实施该方法，并且将重构与来自同一系统的常规通道式光谱极化重构进行比较。通过使用硫化镉（CdS）缓凝剂产生的其他结果证明了该技术在红外范围内的应用。

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