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Critical discussion of models proposed to explain photo‐induced anisotropies in chalcogenide glasses
Author(s) -
Fritzsche Hellmut
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982004
Subject(s) - chalcogenide , anisotropy , bistability , chalcogenide glass , condensed matter physics , materials science , mechanism (biology) , melasma , chemical physics , optics , statistical physics , physics , optoelectronics , geology , quantum mechanics , paleontology
Different theories explaining the origin and the mechanism of the dynamic part of photo‐induced anisotropies which are observed in a large family of chalcogenide glasses will be discussed and analyzed. It is useful to distinguish two kinds of photo‐induced anisotropies, Type 1 which involves a limited concentration of bistable anisotropic defects or centers and Type 2 which encompasses most of the materials.

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