Beam engineering for selective and enhanced coupling to multipolar resonances

Abstract

Multipolar electromagnetic phenomena in sub-wavelength resonators are at the heart of metamaterial science and technology. In this letter, we demonstrate selective and enhanced coupling to specific multipole resonances via beam engineering. We first derive an analytical method for determining the scattering and absorption of spherical nanoparticles (NPs) that depends only on the local electromagnetic field quantities within an inhomogeneous beam. Using this analytical technique, we demonstrate the ability to drastically manipulate the scattering properties of a spherical NP by varying illumination properties and demonstrate the excitation of a longitudinal quadrupole mode that cannot be accessed with conventional illumination. This work enhances the understanding of fundamental light-matter interactions in metamaterials, and lays the foundation for researchers to identify, quantify, and manipulate multipolar light-matter interactions through optical beam engineering.

References in corpus (6)

• Magnetic metamaterials at telecommunication and visible frequencies
• Polarizabilities and Effective Parameters for Collections of Spherical Nano-Particles Formed by Pairs of Concentric Double-Negative (DNG), Single-Negative (SNG) and/or Double-Positive (DPS) Metamaterial Layers
• Excitation of single multipolar modes with engineered cylindrically symmetric fields
• The role of the angular momentum of light in Mie scattering. Excitation of dielectric spheres with Laguerre-Gaussian modes
• Tailoring the excitation of localized surface plasmon-polariton resonances by focusing radially-polarized beams
• Selective excitation of bright and dark plasmonic resonances of single gold nanorods

Cited by in corpus (22)

• Giant nonlinear response at the nanoscale driven by bound states in the continuum
• Ideal magnetic dipole scattering
• Excitation of radiationless anapole mode of isotropic dielectric nanoparticles with tightly focused radially polarized beam
• Multipolar second-harmonic generation from high-$Q$ quasi-BIC states in nanoresonators
• Second-harmonic generation in Mie-resonant dielectric nanoparticles made of noncentrosymmetric materials
• Coherent control of the optical absorption in a plasmonic lattice coupled to a luminescent layer
• Surface - lattice resonances in 2d arrays of spheres: multipolar interactions and a mode analysis
• Multipolar theory of bianisotropic response
• Second harmonic generation in dielectric nanoparticles with different symmetries
• Interferometric evanescent wave excitation of nano-antenna for ultra-sensitive displacement and phase metrology
• Cylindrical vector beams reveal radiationless anapole condition in a resonant state
• Adding a spin to Kerker's condition: arbitrary scattering direction tuning of nano-antennas with designed excitation
• Enhanced second-harmonic generation with structured light in AlGaAs nanoparticles governed by magnetic response
• Manifestation of Extremely High-Q Pseudo-Modes in Scattering of a Bessel Light Beam by a Sphere
• Multipolar scattering analysis of hybrid metal-dielectric nanostructures
• Probing vectorial near field of light: imaging theory and design principles of nanoprobes
• Achiral nanostructures: perturbative harmonic generation and dichroism under vortex and vector beams illumination
• Multipolar analysis of electric and magnetic modes excited by vector beams in core-satellite nano-structures
• Broadband Control on Scattering Events with Interferometric Coherent Waves
• Generalizing the exact multipole expansion: Density of multipole modes in complex photonic nanostructures
• Selective Excitation of Subwavelength Atomic Clouds
• High Finesse Cavity with Anapole-Assisted Resonant Subwavelength Particle Mirror