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Proceedings Paper

Study of orthogonal polarization approximation for ordinary and extraordinary rays in ray tracing for uniaxial crystals
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Paper Abstract

We study the assumption of orthogonal polarization for ordinary and extraordinary rays inside uniaxial crystals, using a closed-form expression for the angle between the polarizations. We highlight that orthogonality holds only when the crystal axis is rather coplanar to the ordinary and extraordinary wave vectors or orthogonal to the extraordinary wave vector, which are the same conditions for the extraordinary ray to stay in the plane of incidence. We show that in general the deviation from orthogonality is rather small, for it depends on the difference of the optical indices, and that negative and positive crystals have different behaviors. Using the paraxial approximation we derive expressions for the polarizations of rays and point out that even under the paraxial regime orthogonality does not hold. Specific examples for calcite and quartz are given.

Paper Details

Date Published: 27 April 2016
PDF: 10 pages
Proc. SPIE 9889, Optical Modelling and Design IV, 98891Y (27 April 2016); doi: 10.1117/12.2227900
Show Author Affiliations
Luis A. Alemán-Castañeda, Univ. Nacional Autónoma de México (Mexico)
Martha Rosete-Aguilar, Univ. Nacional Autónoma de México (Mexico)

Published in SPIE Proceedings Vol. 9889:
Optical Modelling and Design IV
Frank Wyrowski; John T. Sheridan; Youri Meuret, Editor(s)

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