Double-Slit and Square-Slit Interferences With Surface Plasmon Polaritons Modulated by Orbital Angular Momentum Beams

Author

Hailong Zhou ; Yifeng Zhou ; Jihua Zhang ; Jianji Dong

Author_Institution

Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

7

Issue

2

fYear

2015

fDate

Apr-15

Firstpage

1

Lastpage

7

Abstract

We present two kinds of interferences on metallic thin films with orbital angular momentum (OAM) beams, namely, double-slit interference and square-slit interference. When an OAM beam is normally incident upon the metallic thin film with two slits, the fringes on the metallic thin film generated by the interference of two surface-plasmon-polariton waves will twist, and the twist amount depends on the topological charge of the incoming OAM beam. When a square slit is employed, a quasi-square optical lattice will be unveiled, and the arrangement of lattice can be modulated by the OAM beam. The fringes and spots are both at the subwavelength level, which show great potential for superresolution microscopy, OAM detection, and spot-array generation.

Keywords

laser beams; light interference; light interferometry; metallic thin films; optical lattices; polaritons; surface plasmons; OAM detection; double-slit interferences; fringes; metallic thin films; orbital angular momentum beams; quasisquare optical lattice; spot-array generation; square-slit interferences; superresolution microscopy; surface plasmon polaritons; Arrays; Films; Interference; Lattices; Metals; Optical surface waves; Plasmons; Interferometry.; Orbital angular momentum; Surface plasmon; interferometry; surface plasmon;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2415671

Filename

7064735