Thermal and luminescent properties of 2 μm emission in thulium-sensitized holmium-doped silicate-germanate glass
In this paper, we present the luminescent properties of Tm3+∕Ho3+ co-doped new glass. A series of silicategermanate glass was prepared by the conventional melt-quenching method. In the Tm3+∕Ho3+ co-doped silicategermanate glass, a strong emission of 2 μm originating from the Ho3+:5I7 → 5I8 transition can be observed under conventional 808 nm pumping. The characteristic temperatures, structure, and absorption spectra have been measured. The radiative properties of Ho33+ in the prepared glass were calculated. The emission cross section of Ho33+ ions transition can reach 4.78 × 10?21 cm2 around 2 μm, and the FWHM is as high as 153 nm. The energy transfer efficiency between Ho3+ and Tm3+ has a large value (52%), which indicates the Tm3+∕Ho3+ co-doped silicategermanate glass is a suitable candidate for the 2 μm laser. Moreover, the energy transfer mechanism between Tm3+ and Ho3+ ions was investigated.(61370049, 61308090, 61405182, 51172252, 51372235, 51472225); International Science & Technology Cooperation Program of China (2013DFE63070); Public TechnicalInternational Cooperation Project of the Science Technology Department of Zhejiang Province (2015c340009).
基金项目：Natural Science Foundation of Zhejiang Province of China (LY15E020009, LY13F050003, LR14E020003); National Natural Science Foundation of China (NSFC)
Ying Tian：Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China
Bingpeng Li：College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
Xufeng Jing：Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China
Junjie Zhang：College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
Shiqing Xu：College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, Chinaemail:firstname.lastname@example.org
Hellmut Eckert：Institut für Physikalische Chemie, WWU Münster, Corrensstra?e 30, D 48149 Münster, Germany
Xianghua Zhang：Laboratory of Glasses and Ceramics, UMR 6226 CNRS-University of Rennes Cedex 135042, France
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Rong Chen, Ying Tian, Bingpeng Li, Xufeng Jing, Junjie Zhang, Shiqing Xu, Hellmut Eckert, and Xianghua Zhang, "Thermal and luminescent properties of 2 μm emission in thulium-sensitized holmium-doped silicate-germanate glass," Photonics Research 4(6), 214-221 (2016)