Energy scaling and extended tunability of a ring cavity terahertz parametric oscillator based on KTiOPO_(4) crystal  

作　　者：Yuye Wang Yuchen Ren Degang Xu Longhuang Yang Yixin He Ci Song Linyu Chen Changzhao Li Chao Yan Jianquan Yao 王与烨;任宇琛;徐德刚;唐隆煌;贺奕焮;宋词;陈霖宇;李长昭;闫超;姚建铨(Institute of Laser and Optoelectronics,School of Precision Instruments and Optoelectronic Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Optoelectronic Information Science and Technology(Ministry of Education),Tianjin University,Tianjin 300072,China;College of Computer and Information Engineering,Tianjin Agricultural University,Tianjin 300384,China)

机构地区：[1]Institute of Laser and Optoelectronics,School of Precision Instruments and Optoelectronic Engineering,Tianjin University,Tianjin 300072,China [2]Key Laboratory of Optoelectronic Information Science and Technology(Ministry of Education),Tianjin University,Tianjin 300072,China [3]College of Computer and Information Engineering,Tianjin Agricultural University,Tianjin 300384,China

出　　处：《Chinese Physics B》2018年第11期512-516,共5页中国物理B(英文版)

基　　金：Project supported by the National Basic Research Program of China(Grant Nos.2015CB755403 and 2014CB339802);the National Key Research and Development Program of China(Grant No.2016YFC0101001);the National Natural Science Foundation of China(Grant Nos.61775160,61771332,and 61471257);China Postdoctoral Science Foundation(Grant No.2016M602954);Postdoctoral Science Foundation of Chongqing,China(Grant No.Xm2016021)

摘　　要：A wide terahertz tuning range from 0.96 THz to 7.01 THz has been demonstrated based on ring-cavity THz wave parametric oscillator with a KTiOPO_(4)(KTP)crystal.The tuning range was observed intermittently from 0.96 THz to 1.87 THz,from 3.04 THz to 3.33 THz,from 4.17 THz to 4.48 THz,from 4.78 THz to 4.97 THz,from 5.125 THz to 5.168 THz,from5.44 THz to 5.97 THz,and from 6.74 THz to 7.01 THz.The dual-Stokes wavelengths resonance phenomena were observed in some certain tuning angle ranges.Through the theoretical analysis of the dispersion curve of the KTP crystal,the intermittent THz wave tuning range and dual-wavelength Stokes waves operation during angle tuning process were explained.The theoretical analysis was in good agreement with the experiment results.The maximum THz output voltage detected by Golay cell was 1.7 V at 5.7 THz under the pump energy of 210 mJ,corresponding to the THz wave output energy of5.47μJ and conversion efficiency of 2.6×10^(-5).

关 键 词：terahertz parametric oscillator KTiOPO_(4)crystal extended tunability energy scaling 

分 类 号：O4[理学—物理]