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Enhanced picosecond terahertz wave generation based on cascade effects in a terahertz parametric generator |
| Jingxi Zhang(张敬喜)1,2, Yuye Wang(王与烨)1,2,†, Bingfeng Xu(徐炳烽)1,2, Kai Chen(陈锴)1,2, Zikun Liu(刘紫鲲)1,2, Hongru Ma(马鸿儒)1,2, Degang Xu(徐德刚)1,2, and Jianquan Yao(姚建铨)1,2 |
1 School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China;
2 Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China |
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Abstract Enhanced terahertz wave generation via a Stokes cascade process has been demonstrated using picosecond pulse pumped terahertz parametric generation at 1 kHz repetition rate. Clear cascade saturation of terahertz output was observed, and the corresponding cascade-Stokes spectra were analyzed. The maximum terahertz wave average power was 22 μW under a pump power of 30 W, whereas the maximum power conversion efficiency was 8$\times10^{-7}$ under a pump power of 21 W. The THz power fluctuation was measured to be about 1% in 20 min. This THz parametric source with a relatively stable output is suitable for a variety of practical applications.
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Received: 15 March 2024
Revised: 22 April 2024
Accepted manuscript online:
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PACS:
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42.60.-v
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(Laser optical systems: design and operation)
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42.65.-k
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(Nonlinear optics)
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42.65.Dr
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(Stimulated Raman scattering; CARS)
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87.50.U-
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| Fund: This research was funded by the National Natural Science Foundation of China (Grant Nos. U22A20353, U22A20123, 62175182, and 62275193). |
Corresponding Authors:
Yuye Wang
E-mail: yuyewang@tju.edu.cn
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Cite this article:
Jingxi Zhang(张敬喜), Yuye Wang(王与烨), Bingfeng Xu(徐炳烽), Kai Chen(陈锴), Zikun Liu(刘紫鲲), Hongru Ma(马鸿儒), Degang Xu(徐德刚), and Jianquan Yao(姚建铨) Enhanced picosecond terahertz wave generation based on cascade effects in a terahertz parametric generator 2024 Chin. Phys. B 33 084203
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