Visualizing orbital angular momentum of plasmonic vortices

• Main Authors: Shen, Z., Min, C. J., Fang, H., Hu, Zongjiang, Yuan, Guanghui, Yuan, Xiaocong
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/97785; http://hdl.handle.net/10220/10929
• Institution: Nanyang Technological University

Plasmonic vortices (PVs) are generated by focusing a radially polarized optical vortex (OV) beam onto a metal surface. The intensity distribution of the PV is registered with a near-field scanning optical microscopy and agrees well with a theoretical prediction as well as numerical calculation. Besi...