Enhanced picosecond terahertz wave generation based on cascade effects in a terahertz parametric generator  

作　　者：张敬喜 王与烨 徐炳烽 陈锴 刘紫鲲 马鸿儒 徐德刚 姚建铨 Jingxi Zhang;Yuye Wang;Bingfeng Xu;Kai Chen;Zikun Liu;Hongru Ma;Degang Xu;Jianquan Yao(School of Precision Instruments and Optoelectronics Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Optoelectronic Information Technology,Tianjin University,Tianjin 300072,China)

机构地区：[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

出　　处：《Chinese Physics B》2024年第8期271-275,共5页中国物理B（英文版）

基　　金：funded by the National Natural Science Foundation of China (Grant Nos.U22A20353,U22A20123,62175182,and 62275193);Daheng Atlas (Beijing)Laser Technology Co.Ltd.for their support。

摘　　要：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 22μW under a pump power of 30 W,whereas the maximum power conversion efficiency was 8×10^(-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.

关 键 词：terahertz parametric generation stimulated polariton cascade effect CLN crystal 

分 类 号：O441.4[理学—电磁学]