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Proceedings Paper

Photorefractive effect in terbium gallium garnet
Author(s): I. Amin; B. Sugg; Martin Fally; Romano A. Rupp
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Paper Abstract

Terbium gallium garnet is an interesting representative of the family of rare-earth garnets. In these crystal we have observed a photorefractive effect. This effect is probably linked to the light-induced dichroitic and photochromic behavior of this crystal. Using Kramers-Kronig-relations an estimation shows that the light-induced absorption changes can explain the observed refractive index changes. The observation of holographic writing with orthogonally polarized beams may by attribute to orientationally non- equivalent centers, which become anisotropic by the absorption of light after illumination. Yet, the nature of these centers is unclear. Further studies are already under way to clarify this point.

Paper Details

Date Published: 5 February 2002
PDF: 10 pages
Proc. SPIE 4607, Selected Papers from Fifth International Conference on Correlation Optics, (5 February 2002); doi: 10.1117/12.455208
Show Author Affiliations
I. Amin, Univ. Wien (Austria)
B. Sugg, Robert Bosch GmbH (Germany)
Martin Fally, Univ. Wien (Austria)
Romano A. Rupp, Univ. Wien (Austria)

Published in SPIE Proceedings Vol. 4607:
Selected Papers from Fifth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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