J4 ›› 2011, Vol. 38 ›› Issue (2): 141-145+186.doi: 10.3969/j.issn.1001-2400.2011.02.025

• 研究论文 • 上一篇    下一篇

二极管抽运固体激光器热效应的非对称性分析

林林;过振;王石语;刘海强;蔡德芳;李兵斌   

  1. (西安电子科技大学 技术物理学院,陕西 西安  710071)
  • 收稿日期:2010-09-26 出版日期:2011-04-20 发布日期:2011-05-26
  • 通讯作者: 林林
  • 作者简介:林林(1983-),男,西安电子科技大学博士研究生,E-mail: linlin@mail.xidian.edu.cn.
  • 基金资助:

    预研基金资助项目(9140A02010106DZ0101)

Analysis of thermal axial symmetry in the LD side-pumped laser

LIN Lin;GUO Zhen;WANG Shiyu;LI Haiqiang;CAI Defang;LI Bingbin   

  1. (School of Technical Physics, Xidian Univ., Xi'an  710071, China)
  • Received:2010-09-26 Online:2011-04-20 Published:2011-05-26
  • Contact: LIN Lin

摘要:

通过分析光在晶体前后端面相位延迟的空间分布,研究了激光二极管侧面抽运固体激光器热效应的非轴对称性.提出一种评价热效应轴对称程度的参数——非圆度,并使用有限元方法分析了抽运功率、抽运源数量、抽运源之间的角度偏差和抽运距离偏差对非圆度的影响.得到的结论有: 抽运功率越小,或者抽运源空间排布越对称,晶体中的热效应轴对称程度越高;装配中抽运光之间的角度偏差和抽运距离偏差使晶体热效应非轴对称性增加,装配时应尽量保证各抽运源角度和抽运距离一致.

关键词: 激光器, 固体激光器, 热效应, 有限元法, 轴对称性

Abstract:

Based on the analysis of phase delay distribution between two ends of the laser crystal, thermal axial symmetry in an LD side-pumped laser is investigated. A new parameter for describing the thermal axial symmetry is proposed. The influence of pumping power, quantity, angular deviation and pumping distance deviation of LDs is analyzed by the finite element method. The result obtained indicates that the lower the pumping power is, or the more symmetrically the LDs are distributed, the more symmetrical the thermal effect appears; during the assembling process, the LD angular deviation and pumping distance deviation prevent the thermal lens effect from symmetrical axial distribution, which needs to be paid attention to and avoided.

Key words: laser, solid-state laser, thermal effect, finite element method, axial symmetry

中图分类号: 

  • TN248.1