Spectroscopic investigations of 1.06 μm emission in Nd3+-doped alkali niobium zinc tellurite glasses

被引：91

作者：

Babu, S. Surendra ^{[1
]}

Rajeswari, R. ^{[2
]}

Jang, Kiwan ^{[1
]}

Jin, Cho Eun ^{[1
]}

Jang, Kyoung Hyuk ^{[3
]}

Seo, Hyo Jin ^{[3
]}

Jayasankar, C. K. ^{[2
]}

机构：

[1] Changwon Natl Univ, Dept Phys, Chang Won 641773, South Korea

[2] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India

[3] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

来源：

JOURNAL OF LUMINESCENCE | 2010年 / 130卷 / 06期

关键词：

Luminescence properties; Nd3+-doped glasses; Tellurite glasses; Emission cross-section; Saturation intensity; LASER PROPERTIES; AL PHOSPHATE; ND3+ IONS; ABSORPTION; SPECTRA; FLUORESCENCE; LUMINESCENCE; INTENSITIES; ER3+; BAND;

D O I：

10.1016/j.jlumin.2010.01.017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Thermal, structural and optical properties of Nd3+ ions in tellurite glass (TeO2-ZnO-Na2O-Li2O-Nb2O5) have been investigated. Differential thermal analysis revealed reasonably good forming tendency of the glass composition. FTIR spectra were used to analyze the functional groups present in the glass. Judd-Ofelt intensity parameters were derived from the absorption spectrum and used to calculate the radiative lifetime, branching ratio and stimulated emission cross-section of the F-4(3/2) -> I-4(9/2), (11/2), (13/2) transitions. The quantum efficiency of the F-4(3/2) level is comparable as well as higher than the typical value of the other tellurite based glasses. The decay from the F-4(3/2) level is found to be single exponential for different concentrations of Nd3+ ions with a shortening of lifetime with increasing concentration. The experimental values of branching ratio and saturation intensity of F-4(3/2) -> I-4(1/2) transition indicate the favourable lasing action with low threshold power. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1021 / 1025

页数：5

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