Interference of Multiple Surface Plasmon Polaritons

6th conference on Advances in Optoelectronics and Micro/nano-optics

Wang, Dapeng^1,2 ; Yuan, Xiaocong^1 ; Lin, Jiao^1,2

Nanophotonics Research Centre, Shenzhen University, Shenzhen

518060, China^1

School of Engineering, RMIT University, Melbourne

3000, Australia^2

关键词: Electromagnetic confinement;    Enhancement effects;    Free-space interference;    Metal surfaces;    Multiple surfaces;    Nano scale;    Surface plasmon polaritons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/844/1/012041/pdf
DOI  :  10.1088/1742-6596/844/1/012041

来源: IOP

【 摘 要 】

Benefiting from strongly electromagnetic confinement and enhancement effects, surface plasmon polaritons (SPPs) hold great promises for tailoring light on micro and nanoscale. By contrast with previous efforts which massively concentrate on localized SPP mode, we investigated the propagating SPPs in this paper. A number of symmetrical gratings on metal surface are employed to excite multiple SPPs. Interestingly, the exotic interfering phenomena have been observed. They show good agreement with free-space interferences and take advantage of precise controllability. These findings will be promising in the applications of optical tweezers and SPP lithography.