Ortho-Babinet polarization-interrogating filter: an interferometric approach to polarization measurement |
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Authors: | Van Delden Jay S |
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Institution: | Optical Sciences Center, University of Arizona, Tucson, Arizona 85721, USA. jayv@u.arizona.edu |
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Abstract: | A novel, interferometric, polarization-interrogating filter assembly and method for the simultaneous measurement of all four Stokes parameters across a partially polarized irradiance image in a no-moving-parts, instantaneous, highly sensitive manner is described. In the reported embodiment of the filter, two spatially varying linear retarders and a linear polarizer comprise an ortho-Babinet, polarization-interrogating (OBPI) filter. The OBPI filter uniquely encodes the incident ensemble of electromagnetic wave fronts comprising a partially polarized irradiance image in a controlled, deterministic, spatially varying manner to map the complete state of polarization across the image to local variations in a superposed interference pattern. Experimental interferograms are reported along with a numerical simulation of the method. |
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