Time-varying media, dispersion, and the principle of causality
TT Koutserimpas, F Monticone - Optical Materials Express, 2024 - opg.optica.org
The article reviews general properties of time-varying dispersive materials. We first briefly
discuss different dispersion models that have been proposed in the literature, the role of the …
discuss different dispersion models that have been proposed in the literature, the role of the …
Effective medium concept in temporal metamaterials
V Pacheco-Peña, N Engheta - Nanophotonics, 2020 - degruyter.com
Metamaterials are mostly designed in the time-harmonic scenario where wave propagation
can be spatially manipulated. Tailoring the electromagnetic response of media in time has …
can be spatially manipulated. Tailoring the electromagnetic response of media in time has …
Temporal switching to extend the bandwidth of thin absorbers
Wave absorption in time-invariant, passive thin films is fundamentally limited by a trade-off
between bandwidth and overall thickness. In this work, we investigate the use of temporal …
between bandwidth and overall thickness. In this work, we investigate the use of temporal …
Joint multi‐frequency beam shaping and steering via space–time‐coding digital metasurfaces
Digital programmable metasurfaces provide a very powerful and versatile platform for
implementing spatio‐temporal modulation schemes that are of great interest within the …
implementing spatio‐temporal modulation schemes that are of great interest within the …
Time-varying electromagnetic media: opinion
In this opinion article, we briefly summarize some of the background materials and recent
developments in the field of temporal and spatiotemporal media and provide our opinion on …
developments in the field of temporal and spatiotemporal media and provide our opinion on …
Functional analysis of the polarization response in linear time-varying media: A generalization of the Kramers-Kronig relations
We explore the mathematical theory to rigorously describe the response of media with linear
time-varying, generally dispersive, electromagnetic constitutive parameters. We show that …
time-varying, generally dispersive, electromagnetic constitutive parameters. We show that …
Time-varying materials in the presence of dispersion: plane-wave propagation in a Lorentzian medium with temporal discontinuity
We study the problem of a temporal discontinuity in the permittivity of an unbounded medium
with Lorentzian dispersion. More specifically, we tackle the situation in which a …
with Lorentzian dispersion. More specifically, we tackle the situation in which a …
Dipole polarizability of time-varying particles
Invariance under time translation (or stationarity) is probably one of the most important
assumptions made when investigating electromagnetic phenomena. Breaking this …
assumptions made when investigating electromagnetic phenomena. Breaking this …
Uniform-velocity spacetime crystals
ZL Deck-Léger, N Chamanara… - Advanced …, 2019 - spiedigitallibrary.org
We perform a comprehensive analysis of uniform-velocity bilayer spacetime crystals,
combining concepts of conventional photonic crystals and special relativity. Given that a …
combining concepts of conventional photonic crystals and special relativity. Given that a …
Absorption and scattering by a temporally switched lossy layer: Going beyond the Rozanov bound
C Firestein, A Shlivinski, Y Hadad - Physical Review Applied, 2022 - APS
In this paper we study the electromagnetic scattering, absorption, and performance bounds
for short time modulated pulses that impinge on a time-varying lossy layer that is …
for short time modulated pulses that impinge on a time-varying lossy layer that is …