J4 ›› 2013, Vol. 30 ›› Issue (3): 293-297.

• 激光技术与器件 • 上一篇    下一篇

掺镱硅酸钇晶体的激光热效应研究

杨济民,刘丹华,刘杰   

  1. 山东师范大学物理与电子科学学院,山东 济南 250014
  • 收稿日期:2012-07-17 修回日期:2012-11-19 出版日期:2013-05-28 发布日期:2013-05-06
  • 通讯作者: 杨济民(1961-)山东人,教授,主要从事电子技术方面的研究。 E-mail:jmyang@sdnu.edu.cn
  • 基金资助:
    国家自然科学基金(61078032)资助项目

Thermal effects of Yb3+:Y2SiO5 lasers

YANG Ji-min, LIU Dan-hua, LIU Jie   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • Received:2012-07-17 Revised:2012-11-19 Published:2013-05-28 Online:2013-05-06

摘要: 基于LD端面泵浦掺镱硅酸钇(Yb3+:Y2SiO5)晶体的激光特性,考虑晶体侧面的热对流,通过有限差分法求解各向异性介质热传导方程,得到了该晶体的温度场分布、端面热形变分布,计算了在不同泵浦功率下的热焦距。同时比较了考虑晶体侧面热对流系数前后的热焦距,并进行了实验测量,结果表明热焦距随泵浦功率的变化趋势同理论结果相符。

关键词: 激光技术, LD端面泵浦, 掺镱硅酸钇晶体, 有限差分法, 热效应

Abstract: Based on the features of LD end-pumped Yb3+:Y2SiO5 laser crystal and considering the convective heat transfer on the side faces, the temperature distribution, pumped-face distortion and thermal focal length under different pump power were obtained by solving anisotropy heat conductive equation through finite difference method. The thermal focal length before and after considering the heat-transfer coefficients was calculated respectively. And the thermal focal length was further measured experimentally. The experiment results demonstrate that the tendency of thermal focal length changes with pump power agrees well with the theoretical result.

Key words: laser techniques, LD end-pumping, finite difference method, thermal effects

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