物理学报2011，Vol.60Issue(3)：285-292,8.
级联差频产生太赫兹辐射的理论研究
Theoretical research on cascaded difference frequency generation of terahertz radiation
摘要
Abstract
A novel mechanism of cascaded difference frequency generation (DFG) is advanced in this article to solve the problem of low-efficiency in terahertz (THz) DFG. The cascaded DFG process is theoretically analyzed using ZnTe crystal as an example. The optimal pumping condition and crystal length is obtained, and the effects of crystal absorption, wave number mis-match and pumping intensity are investigated by solving the coupling wave equations of cascaded DFG. It is obviously seen from the calculation results that the terahertz conversion efficiency can be greatly enhanced in cascaded DFG, in which the photon conversion efficiency can even break through the Manley-Rowe limit.关键词
太赫兹辐射/差频/级联/ZnTe晶体Key words
terahertz radiation/ difference frequency generation/ cascaded/ ZnTe crystal引用本文复制引用
钟凯,姚建铨,徐德刚,张会云,王鹏..级联差频产生太赫兹辐射的理论研究[J].物理学报,2011,60(3):285-292,8.基金项目
国家重点基础研究发展计划(973)项目(批准号:2007CB310403)和国家自然科学基金(批准号:60801017和10874128)资助的课题. （973）
