Open AccessFourier transform channeled spectropolarimetry in the MWIR
Author(s) -
Michael W. Kudenov,
Nathan Hagen,
Eustace L. Dereniak,
Grant R. Gerhart
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.012792
Subject(s) - optics , fourier transform , interferometry , absorption (acoustics) , stokes parameters , calibration , polarimetry , fast fourier transform , materials science , physics , computer science , algorithm , quantum mechanics , scattering
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 (YVO(4)) 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 interferograms translations, are investigated and techniques are employed to mitigate them.