Non-collinear phase-matching sum-frequency generation based on boundary total reflection in bulk KDP
Collinear phase-matching of sum-frequency generation (SFG) has been studied thoroughly previously, while non-collinear schemes are sometimes more flexible in application. However, this phase-matching type is more difficult to meet and control. We employ a convenient method to obtain harmonic generation in bulk KDP: using an incident wave vector and a reflected wave vector to consist triangle phase-matching relationship. With a simple, flexible set-up, we can observe 351nm SFG and the conversion efficiency is up to ~3.6% per reflection. Furthermore, we believe this approach has potential application value and improvement space.
作者单位：China Academy of Engineering Physics
Guan Yan,Wang Fang,Yang Ying,Wang De''en,Zhang Xin,Qiang Yuan,Zhou Wei,Hu Dongxia,Deng Xuewei,Ren Huaijin. Non-collinear phase-matching sum-frequency generation based on boundary total reflection in bulk KDP[J].Chinese Optics Letters,2019,17(8):08.