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FT-IR Based Polarimeter with High-Quality Brewster-Angle Polarizers



Simon G. Kaplan, Leonard M. Hanssen


A Fourier transform infrared (FT-IR) spectrometer based broadband infrared polarimeter has been developed around a pair of high-quality Brewster angle polarizers. These polarizers consist of four Ge plates in a chevron geometry and have been measured to have extinction ratios of less than 10-5 at four laser wavelengths from 0.63 m to 10.6 m. The polarimeter has been used to characterize wire-grid polarizers from 1 m to 12 m, as well as for full Mueller matrix determination from 1 m to 5 m using a rotating-retarder arrangement with a pair of MgF2 retarders.
SPIE series


extinction ratio, infrared, Mueller matrix, polarizer, retarder


Kaplan, S. and Hanssen, L. (1998), FT-IR Based Polarimeter with High-Quality Brewster-Angle Polarizers, SPIE series (Accessed April 20, 2024)
Created October 8, 1998, Updated June 27, 2017