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18 August 2005 Laboratory results using an active Wollaston polarimeter
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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.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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