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Comparison of commercially available polarizing gratings for mid-infrared studies

Show simple item record Creech-Eakman, Michelle J. Leonard, T. Geis, J. M. 2006-06-13T15:33:33Z 2006-06-13T15:33:33Z 2002-08-27
dc.identifier.citation Ground-Based Telescopes: Polarimetry in Astronomy, Kona, Hawaii, August 27, 2002. en
dc.identifier.clearanceno 02-1933
dc.description.abstract We present the results of lab comparison tests of performance for several commercially available grating polarizers sold for use at mid-infrared wavelengths. The tests were done using a polarized laser diode source (9.2 μm) and photoconductive HgCdTe single pixel detector. We describe some basic equations governing quantification of polarization performance, our instrumental test setup and our results. There is a great deal of difference in the contrast produced by polarizers from different companies. Availability of high-transmission, high-contrast polarizers for use at near and mid-infrared wavelengths will make it possible to routinely characterize polarization of astronomical sources, such as physical properties of dust grains and magnetic field lines around sources of interest. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 2139667 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2002. en
dc.subject mid-infrared en
dc.subject polarizer en
dc.subject optic en
dc.subject grating en
dc.subject instrumentation en
dc.title Comparison of commercially available polarizing gratings for mid-infrared studies en
dc.type Preprint en

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