LD泵浦掺铥(Tm<SUP>3+</SUP>)光纤激光器的数值分析

黎大军; 杜戈果; 闫培光

应用光学, 2007, 28 (4): 0439, 网络出版: 2010-06-03

LD泵浦掺铥(Tm³⁺)光纤激光器的数值分析

Numerical analysis of Tm³⁺-doped silica fiber lasers pumped by LD

论文大纲

黎大军 ^*杜戈果闫培光

作者单位

深圳大学工程技术学院，深圳 518060

掺铥光纤激光器速率方程 Matlab软件数值分析 Tm³⁺-doped fiber laser rate equation Matlab software numerical analysis

摘要

首先从掺铥光纤激光器的速率方程和光传输方程出发，建立数学模型，通过Matlab软件进行数值计算，分析了泵浦光和激光沿光纤的分布以及各能级离子数的变化。在不同掺杂浓度下，研究了小信号增益与入纤泵浦功率的关系以及泵浦光和激光功率与增益介质长度的关系。在不同泵浦功率下，研究了输出功率与输出耦合镜反射率的关系。进一步对不同泵浦吸收系数，研究了斜率效率和泵浦阈值与光纤长度的关系。分析结果表明：存在最佳光纤长度和最佳耦合输出透过率，使得激光输出功率达到最佳值。

Abstract

The mathematic mode based on rate equations and power propagation equations of Tm³⁺-doped silica fiber lasers is established and calculated by Matlab software. Output mirror reflectivities of the laser power,optimization of the fiber length and dopant concentrations may significantly improve the slope efficiency of fiber lasers. The evolution of small signal gain coefficient without upconversion and with upconversion is showed for different pump powers.The distributions of the pump light and laser along the fiber and the ion concentrations at every energy level are analyzed. The relation between the small signal gain and incident pumping power,as well as the relation between the pumping light and laser powers with gain medium length are investigated at different dopant concentrations. The relation between output powers and different output coupling mirror reflectivities is studied at different pumping powers. And the further research is also carried out on the relation of slope efficiency and pumping threshold versus fiber lengths for different pump absorption coefficient. The results indicate that there are optimal fiber length and optimal coupling output transmissivity for the maximum of laser output power.

参考文献

[1] 杨昆，任秋实，魏石刚，等．2 μm 铥(Tm)激光器在生物医学中的应用[J]．激光与光电子学进展，2005，42(9)：52-56．YANG Kun,REN Qiu-shi,WEI Shi-gang,et al.Application of 2 μm Tm laser on biomedicine [J].Laser & Optoelectronics Progress,2005,42 (9) : 52-56. (in Chinese)

[2] 周建民．眼睛安全激光器及军事应用[J]．应用光学，1993，14(2)：48-53．ZHOU Jian-min. Eyesafe laser and their application in military [J]. Journal of Applied Optics,1993,14(2):48-53. (in Chinese)

[3] HONEA E C,BEACH R J,SUTTON S B,et al.115W Tm∶YAG diode pumped solid-state laser[J].IEEE J. Quantum Electronics,1997,33 (9) : 1592-1600.

[4] FRITH G,LANCASTER D G,JACKSON S D.85W Tm³⁺-doped silica fibre laser[J]. Electronics Letters,2005,41(12):687-688.

[5] ZENTENO L. High-power double-clad fiber lasers [J]. IEEE Journal of Quantum Electronics,1993,29(8):1435-1446.

[6] KELSON I. HARDY A. Optimization of strongly pumped fiber lasers [J]. Journal of Lightwave Technology,1999,17(5):891-897.

[7] XU J Q,PRABHU M,LU J R,et al. Efficient double-clad thulium-doped fiber laser with a ring cavity [J]. Applied Optics,2001,40(12): 1983-1988.

[8] JACKSON S D,MOSSMAN S. Efficiency dependence on the Tm³⁺ and Al³⁺concentrations for Tm³⁺-doped silica double-clad fiber lasers [J].Applied Optics,2003,42(15):2702-2707.

[9] JACKSON S D. Power scaling method for 2 μm diode-cladding-pumped Tm³⁺-doped silica fiber lasers that uses Yb³⁺codoping[J]. Optics Letters,2003,28(22):2192-2194.

[10] JACKSON S D,KING T A. Theoretical modeling of Tm-doped silica fiber lasers [J]. Journal of Lightwave Technology,1999,17(5):948-956.

[11] JACKSON S D,KING T A. CW operation of a 1.064 μm pumped Tm-Ho-doped silica fiber laser [J]. IEEE Journal of Quantum Electronics,1998,34(9): 1578-1587.

[12] 董淑福，陈国夫，赵尚弘，等．1180 nm激光抽运Tm，Ho石英光纤激光器理论研究[J]．激光技术，2006，30(2)：138-141．

DONG Shu-fu,CHEN Guo-fu,ZHAO Shang-hong,et al. Theoretical study on the 1180nm laser pumped Tm,Ho co-doped silica fiber laser [J].Laser Technology,2006,30 (2): 138-141. (in Chinese)

[13] 杨选，唐惠荣．非均匀加宽单模激光器的最佳透射率[J]．应用光学，2004，25(1)：34-35．

YANG Xuan,TANG Hui-rong. The optimal transmissivity of inhomogeneously broadened single mode laser[J]. Journal of Applied Optics,2004,25(1):34-35. (in Chinese)

黎大军, 杜戈果, 闫培光. LD泵浦掺铥(Tm³⁺)光纤激光器的数值分析[J]. 应用光学, 2007, 28(4): 0439. LI Da-jun, DU Ge-guo, YAN Pei-guang. Numerical analysis of Tm³⁺-doped silica fiber lasers pumped by LD[J]. Journal of Applied Optics, 2007, 28(4): 0439.

LD泵浦掺铥(Tm³⁺)光纤激光器的数值分析

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