7 September 2017 Hyperspectroscopic Mueller-matrix polarimeter based on channeled polarimetry
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Abstract
This paper describes hyperspectroscopic Mueller-matrix polarimeters based on channeled polarimetry. The channeled polarimetry is a method for measuring polarimetric parameters using a cosinusoidally-modulated spectrum. We previously reported on a snapshot spectroscopic Mueller-matrix polarimeter based on channeled polarimetry. In this article, we describe its expansion for the hyperspectroscopic Mueller-matrix measurement. The hyperspectroscopic image obtained from the system includes components cosinusoidally modulated along both wavenumber- and space-axes which carry the information of sixteen Mueller-matrix elements of the sample under measurement. The Fourier analysis of the hyperspectroscopic image allows us to demodulate the spatially and spectrally resolved Mueller matrix of the sample. This method has a feature that it requires neither mechanical nor active components for polarization modulation. We assembled two systems for the demonstration. The first system uses a wavelength-scanning source for the hyperspectroscopic Mueller matrix measurement. In contrast, the second system incorporates a grating spectrometer for the snapshot measurement of a Mueller matrix as a function of one-dimensional spatial position and wavelength. The feasibility of both systems was demonstrated in the visible region.
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Kazuhiko Oka, Kodai Sayama, Hiroshi Michida, "Hyperspectroscopic Mueller-matrix polarimeter based on channeled polarimetry", Proc. SPIE 10407, Polarization Science and Remote Sensing VIII, 104070M (7 September 2017); doi: 10.1117/12.2273723; https://doi.org/10.1117/12.2273723
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