Light scattering by a spherical particle with a time-periodicrefractive index
Ioannis Stefanou, Petros Andreas Pantazopoulos, N. Stéfanou
Abstract
A rigorous time Floquet method for the calculation of scattering of electromagnetic waves by a homogeneous spherical object, characterized by a periodically varying-in-time isotropic permittivity, is presented. The method is applied to the study of Mie scattering by such a modulated dielectric particle. Our results are in excellent agreement with the quasistatic adiabatic approximation in the slow-modulation limit. At higher modulation frequencies, a remarkable spectral response, including resonant inelastic scattering and frequency conversion as well as energy transfer between the dynamic sphere and the electromagnetic field, is revealed and consistently explained.
Topics & Concepts
Floquet theoryScatteringPhysicsRayleigh scatteringOpticsMie scatteringScattering theoryRefractive indexQuasistatic processComputational physicsIsotropyLight scatteringQuantum mechanicsNonlinear systemQuantum optics and atomic interactionsPhotonic Crystals and ApplicationsPhotonic and Optical Devices