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Optica Publishing Group
  • Current Optics and Photonics
  • Vol. 7,
  • Issue 1,
  • pp. 97-103
  • (2023)

Babinet-principle-inspired Metasurfaces for Resonant Enhancement of Local Magnetic Fields

Open Access Open Access

Abstract

In this paper, we propose Babinet-principle-inspired metasurfaces for strong resonant enhancement of local magnetic fields. The metasurfaces are designed as complementary structures of original metasurfaces supporting the local enhancement of electric fields. We show numerically that the complementary structures can support spoof magnetic surface plasmons that induce strong local magnetic fields without sacrificing the deep sub-wavelength-thick nature of the metasurface. By introducing a periodic array of metallic rods in the proximity of the metasurfaces, we demonstrate that a resonant enhancement of the local magnetic fields, more than 80 times the amplitude of an incident magnetic field, can emerge from a resonance of the spoof magnetic surface plasmons.

© 2023 Optical Society of Korea

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