Scalable pump beam arrangement for diode pumped alkali lasers
Scalable pump beam arrangement for diode pumped alkali lasers
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用于二极管泵浦碱金属激光器的可扩展泵浦光束布置
DOI：
10.1117/12.2287053
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
F. Wani
中科院分区：
文献类型：
--
作者：
M. Endo;Ryuji Nagaoka;Hiroki Nagaoka;T. Nagai;F. Wani
提出了一种二极管抽运碱金属激光器（DPAL）的可扩展抽运方案。在过去，泵浦光束与光学谐振器的光轴共线或横向布置。在我们的方案中，泵浦源围绕光轴圆形排列，泵浦光束以与光轴成小角度（0.1弧度）照射增益单元。该增益介质具有高的圆对称性和高的耦合效率，可实现数十束泵浦光的耦合。通过数值模拟验证了这一思想，并通过实验研究验证了其正确性.
A scalable pumping method for a diode-pumped alkali laser (DPAL) is proposed. In the past, pump beams were collinearly or transversely arranged to the optical axis of the optical resonator. In our proposal, pump sources are circularly arranged around the optical axis, and the pump beams irradiate the gain cell at a small (0.1 radians) angle from the optical axis. Tens of pump beams can be coupled to the gain medium with high circular symmetry and high coupling efficiency. The idea was verified by numerical simulation, and the results were validated by experimental investigation.