Giant field enhancement in high-index dielectric subwavelength particles

Abstract

Besides purely academic interest, giant field enhancement within subwavelength particles at light scattering of a plane electromagnetic wave is important for numerous applications ranging from telecommunications to medicine and biology. In this paper, we experimentally demonstrate the enhancement of the intensity of the magnetic field in a high-index dielectric cylinder at the proximity of the dipolar Mie resonances by more than two orders of magnitude for both the TE and TM polarizations of the incident wave. We present a complete theoretical explanation of the effect and show that the phenomenon is very general - it should be observed for any high-index particles. The results explain the huge enhancement of nonlinear effects observed recently in optics, suggesting a new landscape for all-dielectric nonlinear nanoscale photonics.

arXiv comment8 pages, 4 figures

References in corpus (5)

• Magnetic light
• Strong magnetic response of submicron Silicon particles in the infrared
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• Giant In-Particle Field Concentration and Fano Resonances at Light Scattering by High-Refractive Index Particles
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• Strong microwave photon-magnon coupling in multiresonant dielectric antennas (Perspective)
• Nonlinear absorption in dielectric metamaterials
• Dynamic Fano resonances: From toy model to resonant Mie scattering
• Influence of the Environment on the Effect of Super Resonance in Mesoscale Dielectric Spheres
• The Poynting vector field singularities: Effects of symmetry and its violation
• Polarization-dependent resonant phenomena in all-dielectric scatterers: inversion of magnetic inductance and electric displacement