Intense near-infrared emission of 1.23 μm in erbium-doped low-phonon-energy fluorotellurite glass

被引：11
作者：
Zhou, Bo [1 ,2 ,3 ]
Tao, Lili [2 ,3 ]
Chan, Clarence Yat-Yin [4 ]
Tsang, Yuen Hong [2 ,3 ]
Jin, Wei [1 ]
Pun, Edwin Yue-Bun [4 ]
机构：
[1] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
[2] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China
[3] Hong Kong Polytech Univ, Mat Res Ctr, Kowloon, Hong Kong, Peoples R China
[4] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 111卷
关键词：
Er3+ 1.23 mu m emission; Fluorotellurite glass; Low phonon energy; Population inversion; RARE-EARTH IONS; TELLURITE GLASSES; UP-CONVERSION; OPTICAL-TRANSITIONS; SPECTROSCOPIC PROPERTIES; SPECTRAL PROPERTIES; ER3+ IONS; FIBER; LASER; AMPLIFICATION;
D O I：
10.1016/j.saa.2013.03.078
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Intense near-infrared emission located at 1.23 mu m wavelength originating from the erbium (Er3+):S-4(3/2) -> I-4(11/2) transition is observed in Er3+-doped fluorotellurite glasses. This emission is mainly contributed by the relatively low phonon energy of the fluorotellurite glass host (similar to 776 cm(-1)). Judd-Ofelt analysis indicates a strong asymmetry and covalent environment between Er3+ ions and ligands in the host matrix. The emission cross-section was calculated to be 2.85 x 10(-21) cm(2) by the Fuchtbauer-Ladenburg equation, and the population inversion is realized according to a simplified evaluation. The results suggest that the fluorotellurite glass system could be a promising candidate for the development of optical amplifiers and lasers operating at the relatively unexplored 1.2 mu m wavelength region. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：49 / 53
页数：5
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