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Titolo:
PHOTOINDUCED ANISOTROPY IN PR-DOPED SULFIDE GLASSES WITH VARYING COMPOSITION AND PR CONTENT
Autore:
TIKHOMIROV V; HERTOGEN P; ADRIAENSSENS G; KRASTEVA V; SIGEL G; KIRCHHOF J; KOBELKE J; SCHEFFLER M;
Indirizzi:
KATHOLIEKE UNIV LEUVEN B-3001 HEVERLEE BELGIUM RUTGERS STATE UNIV,FIBER OPT MAT RES PROGRAM PISCATAWAY NJ 08855 INST PHYS HOCHTECHNOL EV,BEREICH MODERNE OPT JENA GERMANY
Titolo Testata:
Journal of non-crystalline solids
, volume: 230, anno: 1998,
parte:, B
pagine: 694 - 699
SICI:
0022-3093(1998)230:<694:PAIPSG>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMICONDUCTORS; STATES; FIBER; GAP; 1.3-MU-M; MODEL;
Keywords:
ANISOTROPY; PR-DOPED; VALENCE ALTERNATION PAIRS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
V. Tikhomirov et al., "PHOTOINDUCED ANISOTROPY IN PR-DOPED SULFIDE GLASSES WITH VARYING COMPOSITION AND PR CONTENT", Journal of non-crystalline solids, 230, 1998, pp. 694-699

Abstract

Metastable photoinduced anisotropy (PA) generated by linearly polarized sub-bandgap light is reported for undoped and Pr-doped Ge-S-I, Ge-Ga-S and As-Ga-S glasses with varying composition and Pr content. Compositional trends of PA are related to the light-stimulated reorientation of intrinsic anisotropic centers and their environments, which vary with composition. These centers can be modeled with pairs of over- andunder-coordinated sulfur atoms: the valence alternation pairs (VAPs). The addition of Pr up to a level of about 1000 ppm affects PA, suggesting that this concentration is comparable with the concentration of VAPs. Microscopic models are proposed for the centers responsible for PA in these glasses. (C) 1998 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 01:36:09