Estimation of the fs laser spot temperature inside TeO2-ZnO-Nb2O5 glass by using up-conversion green fluorescence of Er3+ ions

被引：33

作者：

Hayakawa, Tomokatsu ^{[1
]}

Hayakawa, Masahiko ^{[1
]}

机构：

[1] Nagoya Inst Technol, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 451卷 / 1-2期

关键词：

up-conversion luminescence; Er3+; tellurite glass; nonlinear absorption;

D O I：

10.1016/j.jallcom.2007.04.181

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：

Laser heating of tellurite (TeO2)-based glass up to similar to 550 K by femtosecond (fs) pulses of 800 nm from a regenerative Ti:sapphire laser was optically in situ monitored using green up-conversion fluorescence of Er3+ ions doped in TeO2-based glasses, where a fluorescence intensity ratio of two green up-conversion fluorescence at 526 nm (H-2(11/2)-I-4(15/2)) and 548 nm (S-4(3/2)-I-4(15/2)) was varied by thermal activation between H-2(11/2) and S-4(3/2) levels. By comparison with results on an aluminosilicate glass doped with Er3+ it was clearly found that the fs laser heating was caused by nonlinear absorption of the host material of TeO2-based glass via the imaginary part of the third-order nonlinear susceptibility (chi((3))). (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：77 / 80

页数：4

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