非共线相位匹配太赫兹波参量振荡器级联参量过程的研究（英文）  

Investigation on high-order cascaded parametric processes in terahertz parametric oscillator with a noncollinear phase-matching scheme

作　　者：李忠洋[1] 张云鹏[1] 邴丕彬[1] 袁胜[1] 徐德刚[2] 姚建铨[2] 

机构地区：[1]华北水利水电大学电力学院,河南郑州450045 [2]天津大学精密仪器与光电子工程学院激光与光电子研究所,天津300072

出　　处：《红外与激光工程》2015年第3期990-995,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61201101,61205003)

摘　　要：在铌酸锂晶体非共线相位匹配太赫兹波参量振荡器中观察到了级联光学参量效应。实验中测量到了一阶、二阶和三阶斯托克斯光。通过分析一阶、二阶和三阶斯托克斯光谱发现相邻阶斯托克斯光频率差相等,表明在太赫兹波的产生过程中发生了级联光学参量效应。在高阶级联光学参量过程中,一个泵浦光子可以产生多个太赫兹光子,表明在太赫兹波产生过程中量子转换效率会有效提高。Cascaded optical parametric processes in terahertz parametric oscillator with a noncollinear phase-matching scheme based on bulk lithium niobate were observed. The spectra of the first-, second-,and third-order Stokes waves were observed. By analyze the spectra of the first-, second-, and third-order Stokes waves it is found that the frequency difference between adjacent-order Stokes waves is approximately equivalent, which means that the high-order cascaded parametric processes have realized.With high-order cascaded terahertz parametric processes one pump photon can generate several THz photons, which means that the quantum conversion efficiency can be enhanced.

关 键 词：太赫兹波 太赫兹波参量振荡器 级联光学参量振荡 

分 类 号：TN24[电子电信—物理电子学] O437[机械工程—光学工程]