Intensities and spectral features of the 4I13/2-4I15/2 potential laser transition of Er3+ centers in CaF2-CeF3 disordered crystal

doi:10.1088/1674-1056/26/11/114208

中国物理B ›› 2017, Vol. 26 ›› Issue (11): 114208-114208.doi: 10.1088/1674-1056/26/11/114208

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Intensities and spectral features of the ⁴I_13/2-⁴I_15/2 potential laser transition of Er³⁺ centers in CaF₂-CeF₃ disordered crystal

1. School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China;
2. Shanghai Engineering Research Center for Sapphire Crystals, Shanghai 201899, China;
3. Key Laboratory of Transparent and Opto-Functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;
4. School of Materials Science and Engineering, Tongji University, Shanghai 200092, China;
5. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;
6. Institute of Low Temperature and Structure Research, Polish Academy of Sciences(ILTSR), Okólna, 50-422 Wroclaw, Poland

收稿日期:2017-05-04 修回日期:2017-06-21 出版日期:2017-11-05 发布日期:2017-11-05
基金资助:
Project supported by Shanghai Engineering Research Center for Sapphire Crystals, China (Grant No. 14DZ2252500), the Fund of Key Laboratory of Optoelectronic Materials Chemistry and Physics Chinese Academy of Sciences (Grant No. 2008DP17301), the Fundamental Research Funds for the Central Universities of China, the National Natural Science Foundation of China and China Academy of Engineering Physics Joint Fund (Grant No. U1530152), the National Natural Science Foundation of China (Grant Nos. 61475177 and 61621001), the Natural Science Foundation of Shanghai Municiple, China (Grant No. 13ZR1446100), and the MOE Key Laboratory of Advanced Micro-Structured Materials of China.

Intensities and spectral features of the ⁴I_13/2-⁴I_15/2 potential laser transition of Er³⁺ centers in CaF₂-CeF₃ disordered crystal

Qing-Guo Wang(王庆国)^1,2, Liangbi Su(苏良碧)³, Jun-Fang Liu(刘军芳)⁴, Bin Liu(刘斌)¹, Feng Wu(吴锋)^1,2, Ping Luo(罗平)^1,2, Heng-Yu Zhao(赵衡煜)¹, Jiao-Jiao Shi(施佼佼)¹, Yan-Yan Xue(薛艳艳)¹, Xiao-Dong Xu(徐晓东)⁵, Witold Ryba-Romanowski⁶, Piotr Solarz⁶, Radoslaw Lisiecki⁶, Zhan-Shan Wang(王占山)¹, Hui-Li Tang(唐慧丽)^1,2, Jun Xu(徐军)^1,2

1. School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China;
2. Shanghai Engineering Research Center for Sapphire Crystals, Shanghai 201899, China;
3. Key Laboratory of Transparent and Opto-Functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;
4. School of Materials Science and Engineering, Tongji University, Shanghai 200092, China;
5. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;
6. Institute of Low Temperature and Structure Research, Polish Academy of Sciences(ILTSR), Okólna, 50-422 Wroclaw, Poland

Received:2017-05-04 Revised:2017-06-21 Online:2017-11-05 Published:2017-11-05
Contact: Jun Xu E-mail:xujun@mail.shcnc.ac.cn
Supported by:
Project supported by Shanghai Engineering Research Center for Sapphire Crystals, China (Grant No. 14DZ2252500), the Fund of Key Laboratory of Optoelectronic Materials Chemistry and Physics Chinese Academy of Sciences (Grant No. 2008DP17301), the Fundamental Research Funds for the Central Universities of China, the National Natural Science Foundation of China and China Academy of Engineering Physics Joint Fund (Grant No. U1530152), the National Natural Science Foundation of China (Grant Nos. 61475177 and 61621001), the Natural Science Foundation of Shanghai Municiple, China (Grant No. 13ZR1446100), and the MOE Key Laboratory of Advanced Micro-Structured Materials of China.

摘要/Abstract

摘要： A CaF₂-CeF₃ disordered crystal containing 1.06% of Er³⁺ ions was grown by the temperature gradient technique. Optical absorption and emission spectra recorded at room temperature and at 10 K, luminescence decay curve recorded at room temperature, and extended x-ray-absorption fine structure spectra were analyzed with an intention to assess the laser potential related to the ⁴I_13/2→⁴I_15/2 transition of Er³⁺. In addition, the thermal diffusivity of the crystal was measured at room temperature. The analysis of room-temperature spectra revealed that the ⁴I_13/2 emission is long-lived with a radiative lifetime value of 5.5 ms, peak emission cross section of 0.73×10^-20 cm², and large spectral width pointing at the tunability of the emission wavelength in the region stretching from approximately 1480 nm to 1630 nm. The energies of the crystal field components for the ground and excited multiplets determined from low-temperature absorption and emission spectra made it possible to predict successfully the spectral position and shape of the room-temperature ⁴I_13/2→⁴I_15/2 emission band. Based on the correlation of the optical spectra and dynamics of the luminescence decay, it was concluded that in contrast to Yb³⁺ ions in heavily doped CaF₂ erbium ions in the CaF₂-CeF₃ crystal reside in numerous sites with dissimilar relaxation rates.

关键词: laser materials, crystal growth, excited states

Abstract: A CaF₂-CeF₃ disordered crystal containing 1.06% of Er³⁺ ions was grown by the temperature gradient technique. Optical absorption and emission spectra recorded at room temperature and at 10 K, luminescence decay curve recorded at room temperature, and extended x-ray-absorption fine structure spectra were analyzed with an intention to assess the laser potential related to the ⁴I_13/2→⁴I_15/2 transition of Er³⁺. In addition, the thermal diffusivity of the crystal was measured at room temperature. The analysis of room-temperature spectra revealed that the ⁴I_13/2 emission is long-lived with a radiative lifetime value of 5.5 ms, peak emission cross section of 0.73×10^-20 cm², and large spectral width pointing at the tunability of the emission wavelength in the region stretching from approximately 1480 nm to 1630 nm. The energies of the crystal field components for the ground and excited multiplets determined from low-temperature absorption and emission spectra made it possible to predict successfully the spectral position and shape of the room-temperature ⁴I_13/2→⁴I_15/2 emission band. Based on the correlation of the optical spectra and dynamics of the luminescence decay, it was concluded that in contrast to Yb³⁺ ions in heavily doped CaF₂ erbium ions in the CaF₂-CeF₃ crystal reside in numerous sites with dissimilar relaxation rates.

Key words: laser materials, crystal growth, excited states

中图分类号: (Laser materials)

42.70.Hj

81.10.Fq (Growth from melts; zone melting and refining) 78.47.da (Excited states)

王庆国, 苏良碧, 刘军芳, 刘斌, 吴锋, 罗平, 赵衡煜, 施佼佼, 薛艳艳, 徐晓东, 王占山, 唐慧丽, 徐军. Intensities and spectral features of the ⁴I_13/2-⁴I_15/2 potential laser transition of Er³⁺ centers in CaF₂-CeF₃ disordered crystal[J]. 中国物理B, 2017, 26(11): 114208-114208.

Qing-Guo Wang(王庆国), Liangbi Su(苏良碧), Jun-Fang Liu(刘军芳), Bin Liu(刘斌), Feng Wu(吴锋), Ping Luo(罗平), Heng-Yu Zhao(赵衡煜), Jiao-Jiao Shi(施佼佼), Yan-Yan Xue(薛艳艳), Xiao-Dong Xu(徐晓东), Witold Ryba-Romanowski, Piotr Solarz, Radoslaw Lisiecki, Zhan-Shan Wang(王占山), Hui-Li Tang(唐慧丽), Jun Xu(徐军). Intensities and spectral features of the ⁴I_13/2-⁴I_15/2 potential laser transition of Er³⁺ centers in CaF₂-CeF₃ disordered crystal[J]. Chin. Phys. B, 2017, 26(11): 114208-114208.

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Intensities and spectral features of the ⁴I_13/2-⁴I_15/2 potential laser transition of Er³⁺ centers in CaF₂-CeF₃ disordered crystal

Intensities and spectral features of the ⁴I_13/2-⁴I_15/2 potential laser transition of Er³⁺ centers in CaF₂-CeF₃ disordered crystal

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