Generation of 46 W green-light by frequency doubling of 96 W picosecond unpolarized Yb-doped fiber amplifier

Generation of 46 W green-light by frequency doubling of 96 W picosecond unpolarized Yb-doped fiber amplifier
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通过 96 W 皮秒非偏振掺镱光纤放大器倍频产生 46 W 绿光

DOI:
10.1016/j.optlastec.2017.11.048
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发表时间:
2018-05
影响因子:
5
通讯作者:
Lin Xuechun
Lin Xuechun
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Qi Yaoyao;Yu Haijuan;Zhang Jingyuan;Zhang Ling;He Chaojian;Lin Xuechun

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我们展示了一种基于非偏振掺镱光纤放大器链的 SHG(二次谐波产生)的高效率和高平均功率皮秒绿光源。在两个温度调谐的 I 型相位匹配 LBO 晶体中使用单通倍频,我们能够从 1064nm 的基波光束产生 46W、>70ps 的 532nm 脉冲,其输出为 96W、4.8μJ,重复频率为 20MHz,几乎衍射极限。在高度紧凑的设计中,光学转换效率约为 48%。据我们所知,这是首次报道通过非偏振光纤激光器的二次谐波产生 ps 绿光源,具有如此高的输出和高效率。
We demonstrated a high efficiency and high average power picosecond green light source based on SHG (second harmonic generation) of an unpolarized ytterbium-doped fiber amplifier chain. Using single-pass frequency doubling in two temperature-tuned type-I phase-matching LBO crystals, we were able to generate 46 W, >70 ps pulses at 532 nm from a fundamental beam at 1064 nm, whose output is 96 W, 4.8 μJ, with a repetition frequency of 20 MHz and nearly diffraction limited. The optical conversion efficiency was ∼48% in a highly compact design. To the best of our knowledge, this is the first reported on ps green source through SHG of an unpolarized fiber laser with such a high output and high efficiency.
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