Spectroscopic properties of Nd-doped phosphate glass with a high emission cross section
Mao Yan-Li(毛艳丽)ab, Sun Zhen-Rong (孙真荣)c, Jiang Xiu-Li (蒋秀丽)c, Deng Pei-Zhen (邓佩珍)a, Gan Fu-Xi (干福熹)a
a Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; b Department of Physics, Henan University, Kaifeng 475001, China; c Department of Physics, East China Normal University, Shanghai 201800, China
Abstract Neodymium doped phosphate glasses have been prepared by the semi-continuous melting technique. Their absorption and emission spectra have been recorded at room temperature. The Judd－Ofelt theory has been applied to evaluate the stimulated emission cross sections of 4F3/2→4I11/2 transition for Nd3+. The higher stimulated emission cross section, 4.0×10-20cm2, is obtained. The fluorescence decays of the 4F3/2→4I11/2 transition of Nd3+ are measured for the samples doped (0.7－10) wt% of Nd2O3 at room temperature. The concentration quenching of Nd-doped phosphate glass is mainly attributed to cross-relaxation and energy migration. The site-dependent properties of fluorescence spectra and the fluorescence lifetime of the Nd3+-doped phosphate glass (with 2.2wt%Nd2O3) are studied using laser-induced fluorescence line narrowing techniques, and the site-to-site variations of optical properties are observed at low temperature.
Received: 20 December 2001
Revised: 26 January 2002
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 69988006).
Cite this article:
Mao Yan-Li (毛艳丽), Sun Zhen-Rong (孙真荣), Jiang Xiu-Li (蒋秀丽), Deng Pei-Zhen (邓佩珍), Gan Fu-Xi (干福熹), Spectroscopic properties of Nd-doped phosphate glass with a high emission cross section 2002 Chinese Physics 11 613
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