Directional scattering from particles under evanescent wave illumination: the role of reactive power

Abstract

Study of photonic spin-orbital interactions, which involves control of the propagation and spatial distributions of light with the polarization of electromagnetic fields, is not only important at the fundamental level but also has significant implications for functional photonic applications that require active tuning of directional light propagation. Many of the experimental demonstrations have been attributed to the spin-momentum locking characteristic of evanescent waves. In this letter, we show another property of evanescent waves: the polarization dependent direction of the imaginary part of the Poynting vector, i.e. reactive power. Based on this property, we propose a simple and robust way to tune the directional far-field scattering from nanoparticles near a surface under evanescent wave illumination by controlling linear polarization and direction of the incident light.

References in corpus (16)

• Spin-orbit interactions of light
• Chiral Quantum Optics
• Directional visible light scattering by silicon nanoparticles
• Transverse and longitudinal angular momenta of light
• Quantum spin Hall effect of light
• Chiral nanophotonic waveguide interface based on spin-orbit coupling of light
• Extraordinary momentum and spin in evanescent waves
• Generalized Kerker Effects in Nanophotonics and Meta-Optics
• Demonstration of zero optical backscattering from single nanoparticles
• Universal spin-momentum locking of evanescent waves
• Angle-Suppressed Scattering and Optical Forces on Submicron Dielectric Particles
• Janus and Huygens' dipolar sources for near-field directionality
• Polarization Controlled Directional Scattering for Nanoscopic Position Sensing
• Ultra-directional forward scattering by individual core-shell nanoparticles
• Broadband active tuning of unidirectional scattering from nanoantenna using combined radially and azimuthally polarized beams
• Adding a spin to Kerker's condition: arbitrary scattering direction tuning of nano-antennas with designed excitation

Cited by in corpus (5)

• Observation of high-order imaginary Poynting momentum optomechanics in structured light
• Experimental demonstration of linear and spinning Janus dipoles for polarisation and wavelength selective near-field coupling
• Interferometric evanescent wave excitation of nano-antenna for ultra-sensitive displacement and phase metrology
• Near-Field Directionality Beyond the Dipole Approximation: Electric Quadrupole and Higher-Order Multipole Angular Spectra
• Optical forces from near-field directionalities in planar structures