| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Experimental and numerical investigation of mid-infrared laser in Pr3+-doped chalcogenide fiber |
| Hua Chen(陈华)1,2, Ke-Lun Xia(夏克伦)1,2, Zi-Jun Liu(刘自军)1,2, Xun-Si Wang(王训四)1,2, Xiang-Hua Zhang(章向华)1,3, Yin-Sheng Xu(许银生)1,2, Shi-Xun Dai(戴世勋)1,2 |
1 Laboratory of Infrared Materials and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China;
2 Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo 315211, China;
3 Laboratory of Glasses and Ceramics, UMR CNRS 6226, University of Rennes 1, Rennes Cedex 135042, France |
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Abstract We report on a chalcogenide glass fiber doped with Pr3+ that can be used for commercialized 1.5-μm and 2-μm laser excitations by emitting broadband 3 μm-5.5 μm fluorescence, which is extruded into a preform and then drawn into a step-index fiber. The spectroscopic properties of the fiber and glass are reported, and the mid-infrared fiber lasers are also numerically investigated. Cascade lasing is employed to increase the inversion population of the upper laser level. The particle swarm approach is applied to optimize the fiber laser parameters. The output power can reach 1.28 W at 4.89-μm wavelength, with a pump power of 5 W, excitation wavelength at 2.04 μm, Pr3+ ion concentration at 4.22×1025 ions/m3, fiber length at 0.94 m, and fiber background loss at 3 dB/m.
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Received: 26 September 2018
Revised: 15 November 2018
Accepted manuscript online:
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PACS:
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42.55.Wd
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(Fiber lasers)
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42.70.Hj
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(Laser materials)
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74.70.Xa
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(Pnictides and chalcogenides)
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| Fund: Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61605095), the Natural Science Foundation of Zhejiang Province, China (Grant No. LY19F050004), the Natural Science Foundation of Ningbo City (Grant No. 2015A610038), the Open Fund of the Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices (South China University of Technology) (Grant No. 2016-4), and the K C Wong Magna Fund at Ningbo University. |
Corresponding Authors:
Zi-Jun Liu
E-mail: liuzijun@nbu.edu.cn
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Cite this article:
Hua Chen(陈华), Ke-Lun Xia(夏克伦), Zi-Jun Liu(刘自军), Xun-Si Wang(王训四), Xiang-Hua Zhang(章向华), Yin-Sheng Xu(许银生), Shi-Xun Dai(戴世勋) Experimental and numerical investigation of mid-infrared laser in Pr3+-doped chalcogenide fiber 2019 Chin. Phys. B 28 024209
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