3d fdtd matlab
Such zero-backward-scattering occurs at the condition where the electric ( $p$) and magnetic ( $m$) dipole moments have the same scattering amplitudes with in-phase (so-called the first Kerker condition: $p - m/c = 0$, where c is the speed of light.). For example, Huygens sources, individual scatterers which radiate light only into forward direction, can be realized with non-magnetic structures by the far-field interference between electric and magnetic dipole scatterings.
3d fdtd matlab series#
It has been demonstrated that multipolar interference between a series of resonant modes leads to fascinating phenomena. The development of all-dielectric nanophotonics could impact a wide range of fields, including optical elements, detectors, light-sources, sensing, nanophotonic inks, and so on. It has been proposed and demonstrated that engineering of these modes can remarkably improve the performance of optical components including metasurfaces with the help of the low-loss nature of all-dielectric Mie resonators. One of the important features of the Mie resonance in stark contrast to plasmonics is the possession of electric and magnetic dipole and higher-order multipole resonances. The operation of all-dielectric nanophotonics relies on Mie resonances accompanied by light confinement within sub-wavelength nanostructures made of high-refractive-index materials. The emergence of all-dielectric nanophotonics as an alternative to plasmonics has opened up a door toward the engineering of scattering behaviors by sub-wavelength nanophotonic resonators with an unprecedented degree of freedom. © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement 1.
We also demonstrate the potential of MENP for analysis of anapole states by calculating the multipole expansion under the long-wavelength approximation, which enables us to introduce toroidal dipole moments. We validate the program by comparing results for ideal and realistic nanospheres with those obtained with the Mie theory. MENP decomposes total scattering cross sections into partial ones due to electric and magnetic dipolar and quadrupolar terms based on recently developed exact multipole expansion formulas.
The main purpose of MENP is to carry out post-processing of a rigid multipole expansion for full-field simulations that in principle provide the information of all near- and far-field interactions ( e.g., as a total scattering cross section). MENP is a MATLAB program for computation of multipole contributions to light scattering from current density distributions induced in nanophotonic resonators. Not only to engineer sub-wavelength structures that constitute such devices but also to realize and interpret unnatural phenomena in nanophotonics, a program that efficiently carries out multipole expansion is highly demanded. In modern nanophotonics, multipolar interference plays an indispensable role to realize novel optical devices represented by metasurfaces with unprecedented functionalities. Note: Author names will be searched in the keywords field, also, but that may find papers where the person is mentioned, rather than papers they authored.Use a comma to separate multiple people: J Smith, RL Jones, Macarthur.Use these formats for best results: Smith or J Smith.For best results, use the separate Authors field to search for author names.Use quotation marks " " around specific phrases where you want the entire phrase only.