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Proceedings Paper

Demonstration of a polarization grating imaging spectropolarimeter (PGIS)
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Paper Abstract

We have introduced the concept of a snapshot imaging spectropolarimeter based on anisotropic diffraction gratings known as Polarization Gratings (PGs). This instrument can acquire both spectral and polarization information of an object by using the unique optical properties of PGs, which create a diffraction pattern on a single focal plane array. In this paper we develop a system matrix for reconstructing the object information from this diffraction pattern. This matrix is extendable to various configurations containing several PGs. Moreover, we demonstrate an imaging spectropolarimeter based on this approach, that was used to reconstruct both screen generated scenes and outdoor objects. Reconstructed objects are sampled at 100 ×100 × 51 (x, y, λ) with 4 nm spectral resolution.

Paper Details

Date Published: 26 April 2010
PDF: 9 pages
Proc. SPIE 7672, Polarization: Measurement, Analysis, and Remote Sensing IX, 767208 (26 April 2010); doi: 10.1117/12.849758
Show Author Affiliations
Jihwan Kim, North Carolina State Univ. (United States)
Michael J. Escuti, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 7672:
Polarization: Measurement, Analysis, and Remote Sensing IX
David B. Chenault; Dennis H. Goldstein, Editor(s)

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