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Proceedings Paper

Characterization of infrared polarizers
Author(s): Soe-Mie F. Nee; Teresa L. Cole; Chan Yoo; Dennis K. Burge
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Paper Abstract

The three independent characteristics of a polarizer are transmittance, extinction ratio, and cross-polarized scattering. Extinction ratio, depolarization, incoherent near-specular scattering (NSS), and contrasts are mutually dependent. Spectra of transmittance, extinction ratio, depolarization, and contrast for wiregrid polarizers were measured in the 3- to 5-micrometers wavelength region using the zones average method developed in this paper. Good polarizers are hard to find in this region. By putting two polarizers in a series with the polarization axes parallel to each other, the extinction ratio can be improved greatly by the ratio of total NSS to cross-polarized NSS of the rear polarizer.

Paper Details

Date Published: 3 October 1997
PDF: 12 pages
Proc. SPIE 3121, Polarization: Measurement, Analysis, and Remote Sensing, (3 October 1997); doi: 10.1117/12.283858
Show Author Affiliations
Soe-Mie F. Nee, Naval Air Warfare Ctr. (United States)
Teresa L. Cole, Naval Air Warfare Ctr. (United States)
Chan Yoo, Naval Air Warfare Ctr. (United States)
Dennis K. Burge, Naval Air Warfare Ctr. (United States)

Published in SPIE Proceedings Vol. 3121:
Polarization: Measurement, Analysis, and Remote Sensing
Dennis H. Goldstein; Russell A. Chipman, Editor(s)

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