Characterization of infrared polarizers

Soe-Mie F. Nee; Teresa L. Cole; Chan Yoo; Dennis K. Burge

doi:10.1117/12.283858

3 October 1997 Characterization of infrared polarizers

Soe-Mie F. Nee, Teresa L. Cole, Chan Yoo, Dennis K. Burge

Proceedings Volume 3121, Polarization: Measurement, Analysis, and Remote Sensing; (1997) https://doi.org/10.1117/12.283858
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

Soe-Mie F. Nee, Teresa L. Cole, Chan Yoo, and Dennis K. Burge "Characterization of infrared polarizers", Proc. SPIE 3121, Polarization: Measurement, Analysis, and Remote Sensing, (3 October 1997); https://doi.org/10.1117/12.283858

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