We study the elasto-optic behavior of stressed cubic crystals (all classes) and isotropic materials (like e.g. glasses). We obtain the explicit dependence of the refraction indices on the stress (either applied or residual), as well as a mild generalization of the Brewster law for cubic crystals. We show also that the optic indicatrix and the stress ellipsoid are coaxial only in the isotropic case. This theory allows the improvement of the measurements techniques, as photoelasticity, on cubic crystals and optically isotropic materials.

The Refraction Indices and Brewster Law in Stressed Isotropic Materials and Cubic Crystals / Rinaldi, Daniele; Natali, PIER PAOLO; Montalto, Luigi; Davi', Fabrizio. - In: CRYSTALS. - ISSN 2073-4352. - ELETTRONICO. - 11:9(2021), pp. 1104-1115. [10.3390/cryst11091104]

The Refraction Indices and Brewster Law in Stressed Isotropic Materials and Cubic Crystals

Daniele Rinaldi;Pier Paolo Natali
;
Luigi Montalto;Fabrizio Davì
2021-01-01

Abstract

We study the elasto-optic behavior of stressed cubic crystals (all classes) and isotropic materials (like e.g. glasses). We obtain the explicit dependence of the refraction indices on the stress (either applied or residual), as well as a mild generalization of the Brewster law for cubic crystals. We show also that the optic indicatrix and the stress ellipsoid are coaxial only in the isotropic case. This theory allows the improvement of the measurements techniques, as photoelasticity, on cubic crystals and optically isotropic materials.
2021
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/291735
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