激光技术, 2011, 35 (3): 305, 网络出版: 2011-05-13   

矩形截面Nd∶GGG热容激光器热分析

Thermal analysis of rectangular Nd∶GGG heat capacity lasers
作者单位
西安建筑科技大学 理学院,西安 710055
摘要
为了研究长方体型Nd∶GGG热容激光晶体的热效应,通过对激光晶体工作特点的分析,采用半解析各向异性热分析方法,建立了符合实际工作状态热模型,对长方体型Nd∶GGG热容激光晶体进行了热分析,得到了激光晶体抽运阶段和冷却阶段晶体内部温度场计算公式,定量分析了晶体宽度和厚度对温度场的影响。结果表明,当使用输出功率为8100W、脉冲频率500Hz、脉冲宽度0.2ms的LD抽运晶体4s时,抽运面中心最高温升为169.1℃;停止抽运120s时,晶体最高温升下降到0.97%。所得结果为热容激光器的优化设计提供了理论依据。
Abstract
In order to study the thermal effect of rectangular Nd∶GGG heat capacity laser crystal, the semianalytical analysis of thermal conductive anisotropic material was introduced. Through the analysis of working characteristic of laser crystal, thermal model according to actual working state was established, thermal effect of a rectangular Nd∶GGG crystal was investigated and the expressions of temperature field inside laser crystal in the pump stage and cooling stage were obtained. The effect of width and thickness of the crystal on temperature field was analyzed quantitatively. Results show that a maximum temperature rise of 169.1℃ is obtained in the center of the pump surface after LD-pumped for 4s with an output power of 8100W and a pulse frequency of 500Hz and a pulse width of 0.2ms. The maximum temperature rise decreases to 0.97% 120s later after the pumping stops. The results can offer theoretical basis for the optimization design of heat capacity lasers.

史彭, 辛宇, 李隆, 陈文, 白冰. 矩形截面Nd∶GGG热容激光器热分析[J]. 激光技术, 2011, 35(3): 305. SHI Peng, XIN Yu, LI Long, CHEN Wen, BAI Bing. Thermal analysis of rectangular Nd∶GGG heat capacity lasers[J]. Laser Technology, 2011, 35(3): 305.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!