Magnetic Field Modification of Optical Magnetic Dipoles

Abstract

Acting on optical magnetic dipoles opens novel routes to govern light−matter interaction. We demonstrate magnetic field modification of the magnetic dipolar moment characteristic of resonant nanoholes in thin magnetoplasmonic films. This is experimentally shown through the demonstration of the magnetooptical analogue of Babinet's principle, where mirror imaged MO spectral dependencies are obtained for two complementary magnetoplasmonic systems: holes in a perforated metallic layer and a layer of disks on a substrate.

Role of interactions in the magneto-plasmonic response at the geometrical threshold of surface continuity

“…The oxidation of the Co layer is another major factor since in the simulations the optical and magneto-optical constants obtained from a pristine Co film were considered. The oxidation in our case leads to a shift of the experiment curves similarly to other published works, not only for Co, but other ferromagnetic metals [6,[32][33][34]. Besides that, the intensity will be also influenced by the surface oxidation.…”

Magneto-optical Stern-Gerlach forces and nonreciprocal torques on small particles

“…Indeed, the magneto-optical control of the resonant behavior in plasmonic systems, and the complementary enhancement of the magneto-optical response due to the same resonances, is behind the success of the field of magnetoplasmonics [13]. In the last few years, the standard magnetoplasmonic system exhibiting electric resonances has been extended to consider other situations, such us the exploitation of magnetic resonances [14][15][16], or even the control of thermal radiation and radiative heat transfer at room temperature [17][18][19][20].…”

Magneto-Optical Activity in High Index Dielectric Nanoantennas

“…In the last years the concept of optical magnetic resonances in the visible domain has been put forward for its evident interest in terms of scattering efficiency 28 , and magneto-optical response 29 , this last based on the Babinet principle for plasmonic entities 30 31 .…”