外文题目: 2-3 mu m emission and fluorescent decaying behavior in Ho3+-doped tellurium germanate glass
作者: Gao, Song; Liu, Xueqiang; Kang, Shuai; Liao, Meisong; Hu, Lili
刊名: Opt. Mater.
年: 2016 卷: 53 页： 44--47
英文关键词:
Tellurium germanate glass; Ho3+; 2.05 mu m; similar to 3 mu m; Fluorescent decaying
RARE-EARTH IONS; SPECTROSCOPIC PROPERTIES; ENERGY-TRANSFER; FIBER LASER; OPTICAL-PROPERTIES; ER3+ IONS; HO3+; TM3+; INTENSITIES; TRANSITIONS
英文摘要:
In this work, we report the 2.05 mu m emission and similar to 3 mu m broadband spectra of Ho2O3-doped 33GeO(2)-30TeO(2)-27PbO-10CaO (in mol%) glass under 640 nm laser excitation. Clear emission spectra due to the I-5(7)-I-5(8) transition and the I-5(6)-I-5(7) transition in Ho3+ are observed. The 2.05 gm emission intensity and the full width at half maximum (FWHM) of the similar to 3 mu m broadband depend on the Ho concentration. The peak stimulated emission cross-section of Ho3+ is 6.57 x 10(-21) cm(2) at 2.05 mu m, as calculated by the McCumber theory. The emission spectra are recorded and the maximum emission intensity at 2.05 mu m is obtained at a doping level of 0.5 mol% Ho2O3 in the glass. A broad and flat emission band from 2700 nm to 3050 nm is observed in 2 mol% Ho2O3-doped tellurium germanate glass. The lifetime of the I-5(7) state decreases with the increase in Ho3+ concentration due to non -radiative relaxation processes. An energy transfer coefficient of 271.88 mol(-1) s(-1) is obtained. (C) 2015 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1016/j.optmat.2015.12.045


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