An electromagnetic multipole expansion beyond the long-wavelength approximation

TL;DR: This work proposes several configuration schemes where magnetic anapole modes of simple or hybrid nature can be detected in silicon nanospheres, nanodisks and nanopillars, and proposes the decomposition of this type of excitation into its multipolar content.

TL;DR: The design of nanophotonic platforms for amplified linear and nonlinear chiral sensing is explored. High electric and magnetic field enhancements and preservation of phase relation of circular light are achieved using dielectric nanostructures and plasmonic materials. The proposed coupled silicon disk-gold ring system exhibits broadband magnified circular dichroism and third harmonic generation, reaching enhancements up to 230-fold and 800-fold, respectively.

TL;DR: A plasmonic metasurface that represents the combination of a phase mask generating a double-helix point spread function (DH-PSF) and a metalens for imaging was proposed in this paper.

TL;DR: In this paper, the intensity of the electromagnetic field radiation was derived in the approximation next to the dipole one, based on fundamental equations from the introductory course on classical electrodynamics and straightforward mathematical transformations.

TL;DR: In this paper, the authors discuss the role of surface plasmon polaritons at metal/insulator interfaces and their application in the propagation of surfaceplasmon waveguides.

TL;DR: This work fabricate, characterize, and analyze a MM absorber with a slightly lower predicted A(omega) of 96%.

TL;DR: The steep dispersion of the Fano resonance profile promises applications in sensors, lasing, switching, and nonlinear and slow-light devices.

TL;DR: In this paper, the authors introduce the concept of Fano resonances, which can be reduced to the interaction of a discrete (localized) state with a continuum of propagation modes, and explain their geometrical and/or dynamical origin.