META 2021, META'12

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Plasmonic antennas for the confinement and enhancement of the magnetic field in the infrared spectral domain
Pavel Geshev, Ulrich Christian Fischer, Thierry Grosjean

Last modified: 2012-01-03

Abstract


Metal structures of the shape of a diabolo and a dumbbell are proposed as plasmonic antennas for the confinement and enhancement of the magnetic field amplitude up to a factor ~150 in the infrared spectral domain at the narrow metal neck of the structures. A Boundary Integral Equation Method is used for a numerical solution of Maxwell's equations applied to an axially symmetric scattering system with a radially polarized Bessel beam exciting the structure to calculate the magnetic and electric field around the contour of the particle.


Keywords


Plasmonics, nano-antennas, magnetic optical field