Cavity-enhanced frequency doubling from 795nm to 397.5nm ultra-violet coherent radiation with PPKTP crystals in the low pump power regime.
Cavity-enhanced frequency doubling from 795nm to 397.5nm ultra-violet coherent radiation with PPKTP crystals in the low pump power regime.
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DOI：
10.1364/oe.22.032293
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发表时间：
2014-12
期刊：
影响因子：
3.8
通讯作者：
Xin Wen;Yashuai Han;Jiandong Bai;Jun He;Yanhua Wang;Baodong Yang;Junmin Wang
中科院分区：
文献类型：
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作者：
Xin Wen;Yashuai Han;Jiandong Bai;Jun He;Yanhua Wang;Baodong Yang;Junmin Wang
我们展示了一个简单，紧凑和成本效益的二极管激光泵浦倍频系统在795 nm的低功率制度。在内置PPKTP晶体的蝴蝶结四镜环形增强腔和半单片PPKTP增强腔两种结构中，分别获得了35mW和47mW的397.5nm紫外相干辐射，模式匹配基频光功率约为110mW，转换效率分别为32%和41%。低损耗的半单片腔导致更好的结果。所构建的紫外相干辐射系统具有良好的功率稳定性和光束质量，在量子光学和冷原子物理中具有巨大的应用潜力。
We demonstrate a simple, compact and cost-efficient diode laser pumped frequency doubling system at 795 nm in the low power regime. In two configurations, a bow-tie four-mirror ring enhancement cavity with a PPKTP crystal inside and a semi-monolithic PPKTP enhancement cavity, we obtain 397.5nm ultra-violet coherent radiation of 35mW and 47mW respectively with a mode-matched fundamental power of about 110mW, corresponding to a conversion efficiency of 32% and 41%. The low loss semi-monolithic cavity leads to the better results. The constructed ultra-violet coherent radiation has good power stability and beam quality, and the system has huge potential in quantum optics and cold atom physics.