Spectroscopic polarimetry using channeled spectroscopic polarization state generator (CSPSG)
Spectroscopic polarimetry using channeled spectroscopic polarization state generator (CSPSG)
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DOI：
10.1364/oe.15.003093
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发表时间：
2007-03-19
期刊：
影响因子：
3.8
通讯作者：
Oka, Kazuhiko
中科院分区：
文献类型：
--
作者：
Okabe, Hiroshi;Hayakawa, Masayuki;Oka, Kazuhiko
介绍了一种利用通道光谱进行材料偏振光谱测量的新方法。一对高阶延迟器被结合到宽带分光偏振计的照明光学系统中，使得被测量的样品被以其偏振的光谱依赖性调制的光照明。从分光偏振仪获得的通道光谱的傅立叶分析允许同时确定样品的四个光谱分辨偏振参数。这种方法的一个特点是，它既不需要机械，也不需要电气可控组件的偏振调制，类似于以前的方法的通道分光偏振，其中高阶延迟器放置在接收光学系统。只要所有的光学元件满足互易性原理，新方法可以提供与以前方法相同的样品信息。此外，新的方法具有比以前的方法的额外的优点，它是不太容易受样品引起的波动的波前或光线方向。实验证明了该方法的有效性与双折射样品的测量。(c)2007年，美国光学学会。
A novel method for the spectropolarimetric measurement of materials using the channeled spectrum is described. A pair of high order retarders are incorporated into the illuminating optics of a broadband spectropolarimeter, so that the sample under measurement is illuminated with the light that is modulated in the spectral-dependence of its polarization. The Fourier analysis of the channeled spectrum obtained from the spectropolarimeter allows determining the four spectrally-resolved polarimetric parameters of the sample simultaneously. This approach has a feature that it requires neither mechanically-nor electrically-controllable components for polarization modulation, similar to the previous method for the channeled spectropolarimetry in which the high-order retarders are placed in the receiving optics. The new method can offer the same information about the sample as has been obtained by the previous method, provided that all the optical components satisfy the principle of reciprocity. Furthermore, the new method has an additional advantage over the previous method that it is less susceptible to the sample-induced fluctuations of the wavefront or ray-direction. The effectiveness of this method is experimentally demonstrated with the measurement of a birefringent sample. (c) 2007 Optical Society of America.