表面等离激元波导中表面等离激元二次谐波的产生机制  

Second Harmonic Generation of Surface Plasmon Polaritons in a Plasmonic Waveguide

作　　者：张同舟 徐艺 高宝伟 张家森[1] ZHANG Tongzhou;XU Yi;GAO Baowei;ZHANG Jiasen(Institute of Modern Optics,School of Physics,Peking University,Beijing 100871)

机构地区：[1]北京大学物理学院现代光学研究所,北京100871

出　　处：《北京大学学报（自然科学版）》2022年第6期999-1006,共8页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金(91850104)资助。

摘　　要：在表面等离激元波导的二次谐波产生过程中,波导较大的色散导致的相位失配阻碍了其实际应用,能够消除相位失配的波导尚未见实验报道。通过将单层二硫化钼与平面表面等离激元波导相结合,在波导中实现从基频表面等离激元到倍频表面等离激元的转化,并研究单层二硫化钼-银结构的二次谐波产生特性,为表面等离激元波导中二次谐波产生的实际应用打下基础。Second harmonics generation in plasmon waveguides has been difficult due to the large phase mismatch,and waveguides designed to solve the problem are hard to fabricate and haven’t been experimentally realized.By combining monolayer molybdenum disulfide(MoS2)and plane waveguide,we realized the plasmonto-plasmon second harmonic generation in waveguide and studied the features of MoS2-Ag structures in second harmonics generation,which paves the way to practical second harmonics generation in plasmon waveguides.

关 键 词：表面等离激元 非线性波导 光与物质相互作用 二次谐波产生 

分 类 号：O43[机械工程—光学工程]