Light localisation and magneto-optic enhancement in Ni anti-dot arrays

Abstract

The excitation of surface plasmons in magnetic nano-structures can strongly influence their magneto-optical properties. Here, we use photoemission electron microscopy to map the spatial distribution of the electric near-field on a nano-patterned magnetic surface that supports plasmon polaritons. By using different photon energies and polarization states of the incident light we reveal that the electric near-field is either concentrated in spots forming a hexagonal lattice with the same symmetry as the Ni nano-pattern or in stripes oriented along the $\Gamma$-K direction of the lattice and perpendicular to the polarization direction. We show that the polarization-dependent near-field enhancement on the patterned surface is directly correlated to both the excitation of surface plasmon polaritons on the patterned surface as well as the enhancement of the polar magneto-optical Kerr effect.

References in corpus (5)

• Photoemission Electron Microscopy as a tool for the investigation of optical near fields
• Magnetooptic enhancement and magnetic properties in Fe antidot films with hexagonal symmetry
• Generalized scattering-matrix approach for magneto-optics in periodically patterned multilayer systems
• Surface plasmons and magneto-optic activity in hexagonal Ni anti-dot arrays
• Influence of the magnetic field on the plasmonic properties of transparent Ni anti-dot arrays

Cited by in corpus (10)

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• Spatio-temporal coherent control of thermal excitations in solids
• Broadband enhancement of the magneto-optical activity of hybrid Au loaded Bi:YIG
• Direction-sensitive magnetophotonic surface crystal
• Thickness dependent enhancement of the polar magneto-optic Kerr effect in Co magnetoplasmonic nanostructures
• Plasmonic Spin-Hall Effect of propagating Surface Plasmon Polaritons in Ni${}_{80}$Fe${}_{20}$ microstructures
• Transverse magnetic routing of light emission in hybrid plasmonic-semiconductor nanostructures: Towards operation at room temperature
• Magneto-Optical Activity in High Index Dielectric Nanoantennas