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Sixteen-beam grating-based division-of-amplitude photopolarimeter

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Abstract

A 16-beam grating-based division-of-amplitude photopolarimeter that employs a transmission grating and a linear photodiode detector array has been developed and tested. The transmission grating splits the incident light beam into 16 orders with essentially uniform intensity distribution. Linear polarizers are placed in fanned-out azimuth orientations in different orders, and a quarter-wave retarder is inserted in one order. After calibration, the photopolarimeter makes time-resolved measurements of all the Stokes parameters of the incident light with a precision of 0.001. The calibration and testing of the system at 632.8 nm are presented.

© 1996 Optical Society of America

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