20 March 2003 Full-order Mueller matrix polarimeter using liquid-crystal phase retarders and active illumination
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Abstract
Full order Stokes polarimeters are often composed of an analyzer consisting of a rotating quarter wave plate in front of a horizontal polarizer. A number of measurements are then made with the wave-plate oriented at different angle. The four-element Stokes vector is then computed from a linear combination of these measurements. A disadvantage of this device is that only a limited range of analyzer states can be generated. As a result a large number of measurements may be required to reduce the noise gain in the Stokes vector reconstructor. In this paper we describe a polarimeter based on a linear polarizer and two variable wave plates. It can be shown that such a device can produce an arbitrary polarization state. An active polarimeter consists of a generator stage, which transmits a laser illuminator with different polarization states and a receiver with a polarization analyzer stage. In our system both generator and analyzer stages consist of a horizontal polarizer and two variable wave-plates. A sixteen element Mueller matrix of resolved images is then formed for target characterization.
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David Charles Dayton, David Charles Dayton, Brian G. Hoover, Brian G. Hoover, John D. Gonglewski, John D. Gonglewski, } "Full-order Mueller matrix polarimeter using liquid-crystal phase retarders and active illumination", Proc. SPIE 4884, Optics in Atmospheric Propagation and Adaptive Systems V, (20 March 2003); doi: 10.1117/12.462446; https://doi.org/10.1117/12.462446
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