Magneto-optical Kerr effect in Metasurface Flexible Microarrays by near field excitation

We have experimentally examined the effect of light localization and near field effect on the magneto-optical response of the two-dimensional coupled micro-ring periodic structure. For this purpose, we fabricated main template by laser writing system and stamped it by polydimethylsiloxane-to reach the main twodimensional microstructures. Thus, we coated them with a gold layer and Ni layer as plasmonic and magnetic metasurfaces, respectively. We recorded the spectral magneto-optical longitudinal Kerr effect under 200 mT and the spectrometer’s response in all visible regions under the normal condition as well as pump and probe system by the aid of green laser as pump. The pump was done via high numerical aperture objective lens to excite near field of plasmon in a two-dimensional structure. Our results indicate that the localized surface plasmon resonance, surface lattice resonance as well as electric and magnetic dipole moments enhance the magneto-optical response in two closer channels in the middle of visible region.