DPAL activities in Japan
DPAL activities in Japan
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日本的DPAL活动
DOI：
10.1117/12.2065083
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发表时间：
2015
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;F. Wani
本文评述了日本在二极管泵浦碱金属激光器（DPAL）方面的活动。我们在2011年开始了碱激光工作，目前，我们是日本唯一的玩家。我们的利益是面向应用的，不仅是国防，而且是工业。DPAL是远程激光加工的理想选择，这要归功于其可扩展性和非常好的光束质量。我们正在用小型装置研究Cs DPAL的科学和工程问题。采用带体布拉格光栅外耦合器的商用半导体激光器对增益单元进行纵向泵浦。获得了6.5W的连续波输出，光-光转换效率为56%（基于吸收功率）。数值模拟代码的开发，以了解DPAL的物理和帮助未来的发展。
Activities on diode pumped alkali laser (DPAL) in Japan is reviewed. We have started alkali laser works in 2011, and currently, we are the only players in Japan. Our interests are application oriented, and it is not only defense but also industrial. DPAL is a good candidate as a source of remote laser machining, thanks to its scalability and extremely good beam quality. We are studying on scientific and engineering problems of Cs DPAL with a small-scale apparatus. A commercial diode laser with volume Bragg grating outcoupler is used to pump the gain cell longitudinally. A 6.5 W continuous-wave output with optical to optical efficiency of 56% (based on the absorbed power) has been achieved. Numerical simulation codes are developed to understand the physics of DPAL and to help future developments.