Efficient frequency doubler of 1560 nm laser based on a semi-monolithic resonant cavity with a PPKTP crystal

Efficient frequency doubler of 1560 nm laser based on a semi-monolithic resonant cavity with a PPKTP crystal
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基于PPKTP晶体半单片谐振腔的1560nm激光器高效倍频器

DOI:
10.1016/j.optcom.2016.02.057
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发表时间:
2016-06
期刊:
Opt. Commun.
影响因子:
--
通讯作者:
Shanlong GUO
Shanlong GUO
中科院分区:
其他
文献类型:
--
作者:
Junmin WANG;Kong ZHANG;Yulong GE;Shanlong GUO

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利用2 W掺铒光纤放大器泵浦的半单片周期极化磷酸钛钾(PpKTP)晶体,获得了1.61W的780 nm单频连续激光输出,增强了1560 nm半导体激光器。实验测得的最大倍频效率为77%,考虑基波模式匹配效率时,实用值应为80%。测得的780 nm输出光束质量因子M2优于1.04。780 nm输出的典型均方根波动在30分钟内小于0.5%。这种结构紧凑的倍频器具有良好的机械稳定性,可应用于激光冷却与俘获、原子相干控制、原子干涉仪、Rb原子量子频标等领域。
We have demonstrated 1.61 W of 780 nm single-frequency continuous-wave laser output with a semi-monolithic periodically poled potassium titanyl phosphate (PPKTP) crystal doubler pumped by a 2-W erbium-doped fiber amplifier boosted 1560 nm diode laser. The measured maximum doubling efficiency is 77%, and the practical value should be 80% when taking into account the fundamental-wave mode matching efficiency. The measured beam quality factor of 780 nm output, M2, is better than 1.04. Typical root-mean-square fluctuation of 780 nm output is less than 0.5% in 30 minutes. This compact frequency doubler has good mechanical stability, and can be employed for many applications, such as laser cooling and trapping, atomic coherent control, atomic interferometer, and quantum frequency standard with rubidium atoms.
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