Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser

doi:10.1088/1674-1056/20/3/034205

中国物理B ›› 2011, Vol. 20 ›› Issue (3): 34205-034205.doi: 10.1088/1674-1056/20/3/034205

Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser

Stuart D. Jackson¹, 李剑峰²

(1)Institute of Photonics and Optical Science, School of Physics, University of Sydney, Camperdown 2006, Australia; (2)School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China

收稿日期:2010-09-28 修回日期:2010-10-14 出版日期:2011-03-15 发布日期:2011-03-15
基金资助:
Project supported by the China Postdoctoral Science Foundation (Grant No. 20090451417), the China Postdoctoral Science Special Foundation (Grant No. 201003693), the Fundamental Research Funds for the Central Universities of China (Grant No. ZYGX2009J053)

Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser

Li Jian-Feng(李剑峰)^a)† and Stuart D. Jackson^b)

^a School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China; ^b Institute of Photonics and Optical Science, School of Physics, University of Sydney, Camperdown 2006, Australia

Received:2010-09-28 Revised:2010-10-14 Online:2011-03-15 Published:2011-03-15
Supported by:
Project supported by the China Postdoctoral Science Foundation (Grant No. 20090451417), the China Postdoctoral Science Special Foundation (Grant No. 201003693), the Fundamental Research Funds for the Central Universities of China (Grant No. ZYGX2009J053)and the National Natural Science Foundation of China (Grant No. 60736038).

摘要/Abstract

摘要： Based on the rate equations describing the erbium-doped fluoride glass (ZBLAN) fibre lasers with different pumping configurations being taken into account, this paper presents theoretical calculations related to the dynamic population density and the operation performance of a high power mid-infrared all-fibre erbium-doped ZBLAN fibre laser. It shows that the ground-state absorption, excited-state absorption and energy-transfer-upconversion processes co-exist and produce a population balance, causing the laser to operate stably at a continuous wave state. A good agreement between the theoretical results and recent experimental measurement is obtained. Furthermore, the laser structure parameters including fibre length, reflectance of output fibre Bragg grating and pumping configurations are quantitatively optimised to achieve the best performance. The results show, as expected, that the slope efficiency of the fibre laser can be improved significantly through optimisation, which then provides an important guide for the design of high-performance mid-infrared erbium-doped ZBLAN fibre lasers.

关键词: erbium-doped fibre laser, mid-infrared fibre laser, ZBLAN fibre, rate equations

Abstract: Based on the rate equations describing the erbium-doped fluoride glass (ZBLAN) fibre lasers with different pumping configurations being taken into account, this paper presents theoretical calculations related to the dynamic population density and the operation performance of a high power mid-infrared all-fibre erbium-doped ZBLAN fibre laser. It shows that the ground-state absorption, excited-state absorption and energy-transfer-upconversion processes co-exist and produce a population balance, causing the laser to operate stably at a continuous wave state. A good agreement between the theoretical results and recent experimental measurement is obtained. Furthermore, the laser structure parameters including fibre length, reflectance of output fibre Bragg grating and pumping configurations are quantitatively optimised to achieve the best performance. The results show, as expected, that the slope efficiency of the fibre laser can be improved significantly through optimisation, which then provides an important guide for the design of high-performance mid-infrared erbium-doped ZBLAN fibre lasers.

Key words: erbium-doped fibre laser, mid-infrared fibre laser, ZBLAN fibre, rate equations

中图分类号: (Fiber lasers)

42.55.Wd

42.55.Xi (Diode-pumped lasers) 42.60.Lh (Efficiency, stability, gain, and other operational parameters)

李剑峰, Stuart D. Jackson. Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser[J]. 中国物理B, 2011, 20(3): 34205-034205.

Li Jian-Feng(李剑峰) and Stuart D. Jackson. Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser[J]. Chin. Phys. B, 2011, 20(3): 34205-034205.

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Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser

Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser

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