Ab-initio calculation of excited state absorption of Cr4+ in Y3Al5O12

被引：24

作者：

Ching, WY ^{[1
]}

Xu, YN

Brickeen, BK

机构：

[1] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA

[2] Allied Signal FM&T, Kansas City, MO 64141 USA

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 25期

关键词：

D O I：

10.1063/1.124170

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Cr3+ and Cr4+ impurity states in Y3Al5O12 (YAG) crystal are studied by ab-initio supercell calculations using the density-functional theory. Calculations are carried out with Cr substitutions at the octahedral and tetrahedral Al sites including the effect of Ca co-doping. Optical transitions between various levels and to conduction band states are also calculated. A model for excited state absorption for Cr4+ in YAG is proposed. (C) 1999 American Institute of Physics. [S0003-6951(99)00125-4].

引用

页码：3755 / 3757

页数：3

共 22 条

[1]

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[2]

BAUN SA, 1996, PHYS REV B, V54, P6141

[3] TRANSIENT ANALYSIS OF DEGENERATE 4-WAVE-MIXING IN SATURABLE ABSORBERS - APPLICATION TO CR4+GSGG AT 1.06-MU-M [J].