Demonstration of a polarization grating imaging spectropolarimeter (PGIS)

Jihwan Kim; Michael J. Escuti

doi:10.1117/12.849758

26 April 2010 Demonstration of a polarization grating imaging spectropolarimeter (PGIS)

Jihwan Kim, Michael J. Escuti

Proceedings Volume 7672, Polarization: Measurement, Analysis, and Remote Sensing IX; 767208 (2010) https://doi.org/10.1117/12.849758
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

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.

Citation Download Citation

Jihwan Kim and Michael J. Escuti "Demonstration of a polarization grating imaging spectropolarimeter (PGIS)", Proc. SPIE 7672, Polarization: Measurement, Analysis, and Remote Sensing IX, 767208 (26 April 2010); https://doi.org/10.1117/12.849758

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