Thermally induced birefringence in Faraday devices made from terbium gallium garnet-polycrystalline ceramics (original) (raw)
- Applied Optics
- Vol. 43,
- Issue 32,
- pp. 6030-6039
- (2004)
- •https://doi.org/10.1364/AO.43.006030
Author Information
Author Affiliations
Mikhail A. Kagan and Efim A. Khazanov
M. A. Kagan is with the Davey Laboratory, Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802. USA
E. A. Khazanov (khazanov@appl.sci-nnov.ru) is with the Institute of Applied Physics, 46 Uljanov Street, Nizhny Novgorod, 603950 Russia.
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Abstract
We have developed a model that describes thermally induced birefringence in polycrystalline ceramics that are exposed to a magnetic field. Conditions under which traditional compensation techniques (for glass and single crystals) can be effective for ceramics have been found. It is shown that a ceramic is almost equivalent to a [111]-oriented crystal if the ratio of the rod length to the grain size is ∼300 or more. In particular, residual depolarization (after the compensation techniques are applied) is inversely proportional to this ratio, which is an important consequence of the random nature of thermally induced birefringence in ceramics.
© 2004 Optical Society of America
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