OH1晶体中级联光学差频效应产生太赫兹波（英文）  

Terahertz generation by OH1 based on cascaded difference frequency generation

作　　者：李忠洋[1] 谭联[1] 邴丕彬[1] 袁胜[1] 

机构地区：[1]华北水利水电大学电力学院,河南郑州450045

出　　处：《红外与激光工程》2016年第10期203-208,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61201101,61205003);河南省高等学校青年骨干教师资助计划(2014GGJS-065)

摘　　要：理论分析了有机晶体2-[3-(4-hydroxystyryl)-5,5-dimethylcyclohex-2-enylidene]malononitrile(OH1)中基于共线相位匹配级联光学差频产生太赫兹波的物理过程。从耦合波方程出发分析了级联斯托克斯过程和级联反斯托克斯过程,计算了太赫兹波的强度和量子转换效率。相对于非级联光学差频过程,13阶级联光学差频产生的太赫兹波强度增大了15.96倍。13阶级联光学差频中太赫兹波的量子转换效率为1377%,超过了Manley-Rowe关系的限制。Terahertz （THz） wave generation by organic crystal 2-[3-（4-hydroxystyryl）-5,5- dimethylcyclohex-2-enylidene]malononitrile （OH1） with a collinear phase-matching scheme based on cascaded difference frequency generation（DFG） processes was theoretically analyzed. The cascaded Stokes interaction processes and the cascaded anti-Stokes interaction processes were investigated from coupled wave equations. THz intensities and quantum conversion efficiency were calculated. Compared with noncascaded DFG processes, THz intensities from 13-order cascaded DFG processes were increased to 15.96. The quantum conversion efficiency of 1 377% in cascaded processes can be realized, which exceeds the Manley-Rowe limit.

关 键 词：太赫兹波 级联光学过程 差频产生 

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