| 闫立华,陈檬,任浩,徐会武.多边形二极管侧泵激光器光场匀化设计与分析[J].光电子激光,2018,29(5):471~478 |
| 多边形二极管侧泵激光器光场匀化设计与分析 |
| Optical field uniformity of LDA multiple side pumped solid state laser |
| 投稿时间：2017-09-28 |
| DOI： |
| 中文关键词: 多边形二极管泵浦 吸收光场 |
| 英文关键词:multiple-side-pumped absorption field |
| 基金项目:国家自然科学基金天文联合基金(U1631240)资助项目 (1. 中国电子科技集团公司第十三研究所,石家庄 050051; 2.石家庄麦特达电子科技有限公司,石家庄 050051; 3.北京工业大学 激光工程研究院,北京 100124) |
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| 中文摘要: |
| 随着二极管泵浦固体激光器的应用越来越广泛, 对激光器的输出光场指标的要求越来 越高。本文通过对多边形二极管侧面泵浦固体激光器的研究,深入分析其输出光斑参数的影 响要素,详细论证其关键参量与光场均匀性指标的关系,得到了在给定泵浦条件下,芯片间 距(L1)、芯片发光面与晶体表面间距(L2)两个参量和光场均匀性、吸 收率之间的对应关 系,给出了优化设计方案。结果表明,在五边形侧面泵浦固态激光器中,在其他参数给定 的情况下,芯片间距L1的取值区间为0.4mm~0.8mm,芯片发光面与晶体表面间距L2的取 值 区间为1.8mm~2.4mm。在该范围内,光场分 布标准偏差、吸收率设计指标比较理想。最后, 通过搭建固体激光器测试平台,得到了试验效果,验证了理论分析的正确性,本研究为任意 边型侧泵激光器的设计与制作提供参考。 |
| 英文摘要: |
| With the increasing application of diode pumped solid-state lasers,t he demand for the output optical field is becoming higher and higher.The absor bed distribution model of laser crystal of the laser diode array (LDA) multiple-side pumped solid laser structu re is established,and the normalization distribution morphology of absorption field is calculated by fini te element method．Two critical parameters are presented,including LDA vertical pitc h (L1) and radial distance from emission face to the surface of Nd:YAG rod (L2)．The simulation results show that the parameters of relative absorption percentage and pumping uniformit y in the crystal cross-section are sensitive to the changes of L1 and L2．In the Pentagon side pumped solid-state laser,whe n th e other parameters are given,L1 is within 0.4mm~0.8m m, and L2 is within 1.8mm~2.4mm.In this range,relative ab sorption percentage and pumping uniformity in the crystal cross-section are sensitive are relatively id eal.Finally,by building a solid-laser test platform,we get the experimental results and verif y the correctness of the theoretical analysis. |
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