Enhanced emission at 2.85 μm of Ho3+/Pr3+co-doped α-NaYF4single crystal

WANG Cheng; XIA Hai-ping; FENG Zhi-gang; ZHANG Zhi-xiong; JIANG Dong-sheng; ZHANG Jian; SHENG Qi-guo; TANG Qing-yang; HE Shi-nan; JIANG Hao-chuan; CHEN Bao-jiu

doi:doi:10.1007/s11801-016-5221-4

光电子快报（英文版）, 2016, 12 (1): 56, Published Online: Oct. 12, 2017

Enhanced emission at 2.85 μm of Ho³⁺/Pr³⁺co-doped α-NaYF₄single crystal

论文大纲

WANG Cheng ¹XIA Hai-ping ^1,*FENG Zhi-gang ¹ZHANG Zhi-xiong ¹JIANG Dong-sheng ¹ZHANG Jian ¹SHENG Qi-guo ¹TANG Qing-yang ¹HE Shi-nan ¹JIANG Hao-chuan ²CHEN Bao-jiu ³

Author Affiliations

¹ Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China

² Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315211, China

³ Department of Physics, Dalian Maritime University, Dalian 116026, China

Abstract

The Ho³⁺/Pr³⁺co-doped NaYF₄single crystals with various Pr³⁺concentrations and constant Ho³⁺molar percentage of ~1% were grown by an improved Bridgman method. Compared with the Ho³⁺single-doped NaYF₄crystal, an obviously enhanced emission band at 2.85 μm is observed under 640 nm excitation. The Judd-Ofelt strength parameters (Ω₂, Ω₄and Ω₆) are calculated, the radiative transition probabilities (A), the fluorescence branching ratios (β) and the radiative lifetime (τrad) are obtained in the meantime. The energy transfer from Pr³⁺to Ho³⁺and the optimum fluorescence emission of Ho³⁺ions around 2.85 μm are investigated. Moreover, the maximum emission cross section of above samples at 2.85 μm is calculated to be 0.72×10^-20cm²for the NaYF₄single crystal with Ho³⁺molar percentage of 1% and Pr³⁺molar percentage of 0.5% according to the measured absorption spectrum. All results suggest that the Ho³⁺/Pr³⁺co-doped NaYF₄single crystal may have potential applications in mid-infrared lasers.

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WANG Cheng, XIA Hai-ping, FENG Zhi-gang, ZHANG Zhi-xiong, JIANG Dong-sheng, ZHANG Jian, SHENG Qi-guo, TANG Qing-yang, HE Shi-nan, JIANG Hao-chuan, CHEN Bao-jiu. Enhanced emission at 2.85 μm of Ho³⁺/Pr³⁺co-doped α-NaYF₄single crystal[J]. 光电子快报（英文版）, 2016, 12(1): 56.

Enhanced emission at 2.85 μm of Ho³⁺/Pr³⁺co-doped α-NaYF₄single crystal

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