Singular diffraction-free surface plasmon beams generated by overlapping phase-shifted sources

• Main Authors: Wang, Rong (EEE), Wei, Shibiao, Lin, Jiao, Wang, Qian, Yuan, Guanghui, Du, Luping, Xu, Le, Hong, Minghui, Min, Changjun, Yuan, Xiaocong
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/98721; http://hdl.handle.net/10220/11781
• Institution: Nanyang Technological University

We propose and experimentally demonstrate the singular surface plasmon beam that presents a dark channel generated by a point dislocation and a long diffraction-free propagation distance up to 70λsp. The singular surface beam is the result of the interference of two surface plasmon polariton (SPP) p...