Resonant excited state absorption and relaxation mechanisms in Tb3+-doped calcium aluminosilicate glasses: an investigation by thermal mirror spectroscopy

被引：13

作者：

Bianchi, G. S. ^{[1
]}

Zanuto, V. S. ^{[1
]}

Astrath, F. B. G. ^{[1
]}

Malacarne, L. C. ^{[1
]}

Terra, I. A. A. ^{[2
]}

Catunda, T. ^{[2
]}

Nunes, L. A. O. ^{[2
]}

Jacinto, C. ^{[3
]}

Andrade, L. H. C. ^{[4
]}

Lima, S. M. ^{[4
]}

Baesso, M. L. ^{[1
]}

Astrath, N. G. C. ^{[1
]}

机构：

[1] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana, Brazil

[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[3] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil

[4] Univ Estadual Mato Grosso Sul, BR-79804970 Dourados, MS, Brazil

来源：

OPTICS LETTERS | 2013年 / 38卷 / 22期

关键词：

LASER-EMISSION;

D O I：

10.1364/OL.38.004667

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Resonant excited state absorption (ESA) and relaxation processes in Tb3+-doped aluminosilicate glasses are quantitatively evaluated. A model describing the excitation steps and upconversion emission is developed and applied to interpret the results from laser-induced surface deformation using thermal mirror spectroscopy. The fluorescence quantum efficiency of level D-5(4) was found to be close to unity and concentration independent while, for the level D-5(3), it decreases with Tb3+ concentration. Emission spectroscopy measurements supported these results. ESA cross sections are found to be more than three orders of magnitude higher than the ground state absorption cross section. (C) 2013 Optical Society of America

引用

页码：4667 / 4670

页数：4

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