Controllable directive radiation of a magnetic dipole above planar metal surface

Abstract

We report unidirectional radiation of a magnetic dipole above planar metal surface, the radiation direction can be manipulated via changing the distance between the dipole and the surface. This phenomenon is unique for the combination of magnetic dipole and metal surface and does not happen for linear polarized dipole on metal surface or magnetic dipole on dielectric surface. The underlining physics is analytically disclosed by the interference of two orthogonally-oriented dipole component with π/2 phase lag. A substantially different mechanism of introducing the vectorial nature of the dipole itself to control light emission distinguishes the present scheme from nanoantenna and provides a new degree of freedom in light emission engineering.

References in corpus (3)

• Directional emission of light from a nano-optical Yagi-Uda antenna
• Strong Asymmetric Surface Plasmon Polariton Emission by a Dipole Emitter near a Metal Surface
• Enhanced spontaneous emission from nanodiamond colour centres on opal photonic crystal

Cited by in corpus (10)

• Surface plasmon polariton assisted optical pulling force
• Directional spontaneous emission and lateral Casimir-Polder force on an atom close to a nanofiber
• Channeling of spontaneous emission from an atom into the fundamental and higher-order modes of a vacuum-clad ultrathin optical fiber
• Spontaneous emission of electric and magnetic dipoles in the vicinity of thin and thick metal
• Optical forces from near-field directionalities in planar structures
• Beam steering and impedance matching of plasmonic horn nanoantennas
• Spontaneous emission of a two-level atom with an arbitrarily polarized electric dipole in front of a flat dielectric surface
• Lateral Casimir-Polder forces by breaking time-reversal symmetry
• Lateral forces on nanoparticles near a surface under circularly-polarized plane-wave illumination
• Lateral interatomic dispersion forces