摘要
针对目前数值分析法对光纤耦合激光二极管端面泵浦激光晶体温度场研究精确度不高的问题,从解析分析理论出发研究了受到具有高斯分布的泵浦光端面入射的激光晶体内部温度场的分布情况,建立了符合激光晶体工作状态的热模型.通过热传导方程,利用半解析方法对其进行了求解,得出了激光晶体内部温度场分布的通解形式,同时对影响激光晶体内部温度场分布的各种因素进行了研究.研究结果表明:当使用输出功率为10W的二极管激光器端面泵浦掺钕钇铝石榴石晶体(晶体掺钕离子的质量分数为1 0%)时,在晶体端面获得了49 1℃的最大温升.这种方法还可以应用到激光系统内的其他热问题研究中,为有效地解决激光系统中的热问题提供了理论依据.
To improve the low precision of the numerical analysis method in research of diode laser end-pumping crystal interior temperature field, the analytical theory was introduced into describing laser crystal interior temperature field distribution characteristics caused by the pump laser with Gauss mode. A thermal model was built according to the actual working state. Based on the heat conduct equation, the general solution of laser crystal interior temperature distribution was obtained by the semi-analytical thermal analysis method. Some relevant parameters, which would influence temperature field distribution, were analyzed. The result shows that when the output power of diode laser is 10 W, the end-face of 1.0% neodymium-doped yttrium aluminum garnet crystal can get 49.1°C maximal relative temperature elevation. The method can be used to analyze other thermal problems in laser systems, and make a theoretical foundation for solving thermal problems in laser systems.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2004年第4期369-372,共4页
Journal of Xi'an Jiaotong University
基金
教育部"教育振兴行动计划"资助项目
关键词
端面泵浦
激光晶体
半解析方法
Diodes
Numerical analysis
Pumping (laser)
Temperature distribution
Thermoanalysis
