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Proceedings Paper

Improved midinfrared polarizers using yttrium vanadate
Author(s): Larry G. DeShazer
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Paper Abstract

Pure yttrium vanadate crystals (YVO4) have optical properties ideal for polarizers in the mid-IR spectrum. YVO4 is highly transmissive from 400 to 3800 nm and is optically useful to 5 micrometers . YVO4 is a positive uniaxial crystal with a birefringence larger than the negative uniaxial crystal calcite. The positive birefringence of YVO4 gives ordinary polarization to the beam transmitted by the polarizer, producing a desirable symmetric field-of- view for all standard designs. Glan, Wollaston, and Rochon polarizers were fabricated from YVO4 and tested. The preferred Glan design for YVO4 is Glan-Taylor as for calcite. YVO4 has advantages in large aperture size, excellent optical quality, high laser-damage threshold, and excellent optical working ability with only a slight tendency to cleave. New monolithic crystal polarizer designs will be described. It is also believed that YVO4 would be an excellent synthetic substitute for calcite in the visible spectrum.

Paper Details

Date Published: 9 January 2002
PDF: 7 pages
Proc. SPIE 4481, Polarization Analysis and Measurement IV, (9 January 2002); doi: 10.1117/12.452881
Show Author Affiliations
Larry G. DeShazer, Lightwave Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 4481:
Polarization Analysis and Measurement IV
Dennis H. Goldstein; Walter G. Egan; David B. Chenault; Michael J. Duggin; Walter G. Egan; Michael J. Duggin, Editor(s)

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