Title :
Unidirectional scattering and emission of light mediated by a single-element nanoantenna
Author :
Verellen, Niels ; Vercruysse, Dries ; Sonnefraud, Yannick ; Xuezhi Zheng ; Di Martino, Gerardo ; Vandenbosch, Guy A. E. ; Lagae, Liesbet ; Moshchalkov, Victor V. ; Maier, Stefan A. ; Van Dorpe, Pol
Author_Institution :
Dept. of Phys., KU Leuven, Leuven, Belgium
Abstract :
A V-shaped single-element metallic nanoantenna is found to enable unidirectional scattering of light. We experimentally and by means of FDTD simulations show unidirectional scattering of a plane wave and unidirectional emission from photoluminescent molecules coupled to the antenna. An eigenmode analysis reveals the physical origin of this effect and elegantly explains how the direction of the scattered light is reversed depending the excitation type.
Keywords :
eigenvalues and eigenfunctions; finite difference time-domain analysis; light scattering; metamaterial antennas; nanophotonics; photoluminescence; FDTD simulations; V-shaped single-element metallic nanoantenna; eigenmode analysis; excitation type; light emission; photoluminescent molecules; plane wave; scattered light; single-element nanoantenna; unidirectional scattering; Dipole antennas; Directive antennas; Interference; Optical surface waves; Plasmons; Scattering;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
