Chinese Optics Letters, 2017, 15 (5): 051604, Published Online: Jul. 23, 2018   

Influence of Tm3+ ions on the amplification of Ho3+:5I75I8 transition in fluoride glass modified by Al(PO3)3 for applications in mid-infrared optics

Author Affiliations
1 College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
2 Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract
In this work, we investigate a new type of fluoride glasses modified by Al(PO3)3 with various Tm3+/Ho3+ doping concentrations. The introduced PO3 plays an effective role in improving the glass-forming ability and thermal stability. Besides, 1.47, 1.8, and 2.0 μm emissions originating from Tm3+ and Ho3+, respectively, are observed. The spectroscopic properties and energy transfer mechanisms between Tm3+ and Ho3+ are analyzed as well. It is noted that the higher predicted spontaneous transition probability (118.74 s 1) along with the larger product of measured decay lifetime and the emission cross section (σemi×τ) give evidence of intense 2.0 μm fluorescence.

Fangwei Qi, Feifei Huang, Tao Wang, Ruoshan Lei, Junjie Zhang, Shiqing Xu, Long Zhang. Influence of Tm3+ ions on the amplification of Ho3+:5I75I8 transition in fluoride glass modified by Al(PO3)3 for applications in mid-infrared optics[J]. Chinese Optics Letters, 2017, 15(5): 051604.

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