Improved midinfrared polarizers using yttrium vanadate

Larry G. DeShazer

doi:10.1117/12.452881

9 January 2002 Improved midinfrared polarizers using yttrium vanadate

Larry G. DeShazer

Proceedings Volume 4481, Polarization Analysis and Measurement IV; (2002) https://doi.org/10.1117/12.452881
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Larry G. DeShazer "Improved midinfrared polarizers using yttrium vanadate", Proc. SPIE 4481, Polarization Analysis and Measurement IV, (9 January 2002); https://doi.org/10.1117/12.452881

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