Title :
Creating surface plasmon orbital angular momentum in a gold metasurface
Author :
Ching-Fu Chen ; Chen-Ta Ku ; Ming-Yang Pan ; Pei-Kuen Wei ; Chen-Bin Huang
Author_Institution :
Inst. of Photonics Technol., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Nanocavities inscribed in a gold thin film is optimized and arranged to form a metasurface. We demonstrate both numerically and experimentally that surface plasmon vortex carrying orbital angular momentum can be generated under linearly-polarized optical excitation.
Keywords :
angular momentum; gold; light polarisation; metallic thin films; nanophotonics; nanostructured materials; optical metamaterials; optical vortices; surface plasmons; Au; gold metasurface; gold thin film; linearly-polarized optical excitation; nanocavities; orbital angular momentum; surface plasmon orbital angular momentum; surface plasmon vortex; Gold; Optical films; Optical polarization; Optical scattering; Optical vortices; Plasmons; Spirals;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
