Laser transition characteristics of Nd3+-doped fluorophosphate laser glasses

被引：20
|
作者：
Babu, S. Surendra
Babu, P.
Jayasankar, C. K. [1 ]
Joshi, A. S.
Speghini, A.
Bettinelli, M.
机构：
[1] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India
[2] Govt Degree Coll, Dept Phys, Wanaparthy 509103, India
[3] Ctr Adv Technol, High Power Laser Opt Lab, Laser Plasma Div, Indore 452013, India
[4] Univ Verona, Dipartimento Sci & Tecnol, I-37134 Verona, Italy
[5] INSTM, UdR Verona, I-37134 Verona, Italy
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2007年 / 353卷 / 13-15期
关键词：
optical spectroscopy; absorption; lasers; luminescence; phosphates; rare-earths in glasses;
D O I：
10.1016/j.jnoncrysol.2006.09.070
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fluorophosphate glasses of composition P2O5-K2O-MgO)-A1(2)O(3)-A1F(3) and P2O5-K2O-MgO-A1(2)O(3)-BaF2 were prepared with different Nd3+ ion concentrations. The absorption and emission spectra in the UV-VIS-NIR region were measured for these glasses. Judd-Ofelt analysis has been carried out using the absorption spectra of 1.0 mol% Nd3+-doped glasses to evaluate the radiative properties for some luminescent levels of the Nd3+ ion. The stimulated emission cross-sections of the F-4(3/2) -> I-4(11/2) laser transition for the present glasses are found to be higher than for other Nd3+-doped glasses. Branching ratio calculations also revealed the potentiality of the F-4(3/2) I-4(11/2) transition for laser action in these glasses. The observed concentration quenching of the lifetime of the 4 F3/2 level is explained as a result of cross-relaxation process between the Nd3+ ions. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1402 / 1406
页数：5
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