掺铥双包层光纤激光器的热效应分析和实验研究  

Thermal effect and experimental research for tm^(3+)-doped double-clad fiber Laser

作　　者：王郡婕[1] 冯晓强[1] 冯选旗[1] 陆宝乐[1] 杨丽萍[1] 林司芬[1] 白晋涛[1] 

机构地区：[1]西北大学光子学与光子技术研究所,西安710069

出　　处：《激光杂志》2013年第1期4-6,共3页Laser Journal

基　　金：国家"863计划"(2009AA03Z441);陕西省自然科学基金(2010JM1006);陕西省教育厅自然科学基础研究专项(08JK470)资助

摘　　要：为了分析温度对掺铥双包层光纤激光器的影响,本文在模拟了掺铥双包层光纤内泵浦功率密度沿光纤轴向分布的基础上,从热传导方程出发,推导了单端泵浦的掺铥双包层光纤内的温度分布,并数值模拟了其温度沿光纤轴向和径向的分布特性。表明在热传导过程中,热量主要沿光纤径向传输。根据模拟结果在实验中设计合适有效的散热装置,测得熔接一个泵浦模块时,采取散热装置后激光器的输出功率提高了19.3%;在此基础上熔接三个泵浦模块,测得每个模块的泵浦电流为36A时,激光器的输出功率为23.9 W。In order to analyze the influence of temperature to Tm3 ＋ - doped double - clad fiber laser, in this paper, based on the simulation of pump power density along the fiber axial direction, we deduced the temperature distribution in the double - clad fiber which was single ended pumped, according to the thermal conductive equations. We also simulated the temperature distribution characteristics along the fiber axial and radial direction which indicated that in the process of heat conduction, heat was nminly propagated along the radical direction. Based on the simulation results we designed the effective cooling equipment. When welding one pump module, the laser output power was improved 19.3 % after using it; when welding three pump modules, as a result an output power of 23.9 W was achieved with the pump current of 36 A.

关 键 词：掺铥双包层光纤激光器 热效应 温度分布 

分 类 号：TN248.1[电子电信—物理电子学]