Enhanced Terahertz Wave Generation via Stokes Wave Recycling in Non-Synchronously Picosecond Pulse Pumped Terahertz Source

Enhanced Terahertz Wave Generation via Stokes Wave Recycling in Non-Synchronously Picosecond Pulse Pumped Terahertz Source
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通过非同步皮秒脉冲泵浦太赫兹源中斯托克斯波回收增强太赫兹波产生

DOI:
10.1109/jphot.2019.2934488
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发表时间:
2019-08
影响因子:
2.4
通讯作者:
Yao Jianquan
Yao Jianquan
中科院分区:
工程技术4区
文献类型:
--
作者:
Yan Chao;Xu Degang;Wang Yuye;Wang Zhaohua;Wei Zhiyi;Tang Longhuang;He Yixin;Li Jining;Zhong Kai;Shi Wei;Yao Jianquan

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在非同步皮秒脉冲泵浦下,利用斯托克斯波再循环产生了增强的太赫兹波。理论分析表明,在高泵浦峰值功率密度条件下,强的一阶斯托克斯波振荡有利于高阶斯托克斯波的发射和太赫兹波的产生。实验结果表明,与传统的单程太赫兹参量产生相比,非同步皮秒脉冲泵浦太赫兹参量产生中斯托克斯波再循环产生的太赫兹波功率提高了5.71倍。在泵浦功率为20 W、腔长为170 mm时,最大太赫兹波平均功率为61.7 μ W,最大功率转换效率为3.085 × 10 − 6。
Enhanced terahertz wave generation via Stokes wave recycling in a non-synchronously picosecond pulse pump configuration has been demonstrated. It is theoretically analyzed that under the condition of high pump peak power density, the oscillation of the strong 1st order Stokes wave could benefit the higher order Stokes wave emission and terahertz wave generation. In the experiment, 5.71 times enhancement of terahertz wave generation was obtained via Stokes wave recycling in the non-synchronously picosecond pulse pumped terahertz parametric generator compared with the conventional single-pass terahertz parametric generation. The maximum terahertz wave average power was 61.7 μW under the pump power of 20 W and the cavity length of 170 mm, while the maximum power conversion efficiency was 3.085 × 10−6.
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