Fourier transform channeled spectropolarimetry in the MWIR

被引:104
作者
Kudenov, Michael W.
Hagen, Nathan A.
Dereniak, Eustace L.
Gerhart, Grant R.
机构
[1] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA
[2] USA, TACOM, Warren, MI 48397 USA
关键词
Absorption - Calibration - Crystals - Infrared radiation - Interferometers - Mathematical models - Parameter estimation - Polarimeters;
D O I
10.1364/OE.15.012792
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A complete Fourier Transform Spectropolarimeter in the MWIR is demonstrated. The channeled spectral technique, originally developed by K. Oka, is implemented with the use of two Yttrium Vanadate (YVO4) crystal retarders. A basic mathematical model for the system is presented, showing that all the Stokes parameters are directly present in the interferogram. Theoretical results are compared with real data from the system, an improved model is provided to simulate the effects of absorption within the crystal, and a modified calibration technique is introduced to account for this absorption. Lastly, effects due to interferometer instabilities on the reconstructions, including nonuniform sampling and interferogram translations, are investigated and techniques are employed to mitigate them. (c) 2007 Optical Society of America.
引用
收藏
页码:12792 / 12805
页数:14
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