Optical study of chromium doped LaGaO3 single crystal

被引：25

作者：

Ryba-Romanowski, W

Golab, S

Dominiak-Dzik, G

Sokólska, I

Berkowski, M

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50422 Wroclaw, Poland

[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 284卷 / 1-2期

关键词：

optical materials; luminescence; laser crystals;

D O I：

10.1016/S0925-8388(98)00927-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of LaGaO3 containing 0.1 at.% and 0.3 at.% of Cr3+ were grown by the Czochralski method and investigated in the 5-300 K temperature region using methods of spectroscopy. Energy levels relevant to experimentally observed transitions have been located based on absorption measurements. Emission spectra of Cr3+ in LaGaO3 are consistent with a strong crystal field case in which the E-2 state is the lowest. Room temperature luminescence consists of a broad band stretching from about 12700 cm(-1) to 15000 cm(-1). At low temperature two sharp R-1 and R-2 lines of isolated Cr3+ ions and a single N line associated with the exchange coupled Cr3+ pairs have been located. Influence of temperature on linewidth and lineshift of no-phonon lines has been examined. (C) 1999 Published by Elsevier Science S.A. All rights reserved.

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收藏

页码：22 / 26

页数：5

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