Laboratory results using an active Wollaston polarimeter

R. M. Neal; David Dayton; John Gonglewski

doi:10.1117/12.619256

18 August 2005 Laboratory results using an active Wollaston polarimeter

R. M. Neal, David Dayton, John Gonglewski

Proceedings Volume 5888, Polarization Science and Remote Sensing II; 58880F (2005) https://doi.org/10.1117/12.619256
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Active imaging polarimetry is a unique imaging technique in which a particular scene of interest is illuminated by a laser source with a known polarization state. Changes in the state of polarization of the received light yields information beyond what is available in conventional intensity imaging. This approach has an advantage over passive polarimetry in that one has control over the polarization state of the illumination with the potential of determining all sixteen elements of the associated Mueller matrix. While determining the entire Mueller matrix is the most comprehensive method for describing the polarization changing properties of the scene, for most cases it does not yield significantly more information than simply determining the 4 diagonal elements of the Mueller matrix. The Active Wollaston Polarimeter is based around the ability of the Wollaston prism to split orthogonal polarization states into two beams propagating at slightly different angles allowing two images to be formed on a single camera. The Wollaston prism, combined with a series of liquid crystal variable retarders allows monopulse determination of any single Mueller matrix element. This technique results in a fast, compact polarization measurement system. This paper presents the initial laboratory results of the Active Wollaston Polarimeter along with an analysis of the polarimeter's performance.

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R. M. Neal, David Dayton, and John Gonglewski "Laboratory results using an active Wollaston polarimeter", Proc. SPIE 5888, Polarization Science and Remote Sensing II, 58880F (18 August 2005); https://doi.org/10.1117/12.619256

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KEYWORDS

Polarization

Polarimetry

Prisms

Staring arrays

Wave plates

Birefringence

Imaging systems

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