Short-Pulsed Metamaterials.

@article{Rizza2022ShortPulsedM,
  title={Short-Pulsed Metamaterials.},
  author={Carlo Rizza and Giuseppe Castaldi and Vincenzo Galdi},
  journal={Physical review letters},
  year={2022},
  volume={128 25},
  pages={
          257402
        }
}
We study a class of temporal metamaterials characterized by time-varying dielectric permittivity waveforms of duration much smaller than the characteristic wave-dynamical timescale. In the analogy between spatial and temporal metamaterials, such a short-pulsed regime can be viewed as the temporal counterpart of metasurfaces. We introduce a general and compact analytical formalism for modeling the interaction of a short-pulsed metamaterial with an electromagnetic wave packet. Specifically, we… 

Figures from this paper

References

SHOWING 1-10 OF 44 REFERENCES
Nonlocal effects in temporal metamaterials
Abstract Nonlocality is a fundamental concept in photonics. For instance, nonlocal wave-matter interactions in spatially modulated metamaterials enable novel effects, such as giant electromagnetic
Temporal multilayer structures for designing higher-order transfer functions using time-varying metamaterials
Temporal metamaterials are artificial materials whose electromagnetic properties change over time. In analogy with spatial media and metamaterials, where their properties change smoothly or abruptly
Effective medium concept in temporal metamaterials
Abstract 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 also gained
Photonics of time-varying media
Abstract. Time-varying media have recently emerged as a new paradigm for wave manipulation, due to the synergy between the discovery of highly nonlinear materials, such as epsilon-near-zero
Exploiting space-time duality in the synthesis of impedance transformers via temporal metamaterials
Abstract Multisection quarter-wave impedance transformers are widely applied in microwave engineering and optics to attain impedance-matching networks and antireflection coatings. These structures
Light propagation through metamaterial temporal slabs: reflection, refraction, and special cases.
TLDR
The results reported in this Letter pave the way to creating novel devices based on temporal discontinuities, such as temporal matching networks, Bragg grating, and dielectric mirrors, which exhibit zero space occupancy by exploiting the time dimension, instead of the spatial dimension.
Strong spatial dispersion in time-modulated dielectric media
We present an effective medium description of time-modulated dielectric media. By taking the averaged fields over one modulation period, the relationship between them is derived, defining therefore
Nonlocal homogenization theory in metamaterials: Effective electromagnetic spatial dispersion and artificial chirality
We develop, from first principles, a general and compact formalism for predicting the electromagnetic response of a metamaterial with non-magnetic inclusions in the long wavelength limit, including
Time-varying optical vortices enabled by time-modulated metasurfaces
Abstract In this paper, generation of optical vortices with time-varying orbital angular momentum (OAM) and topological charge is theoretically demonstrated based on time-modulated metasurfaces with
Wood Anomalies and Surface-Wave Excitation with a Time Grating.
TLDR
This Letter proposes temporal inhomogeneities, such as a periodic drive in the electromagnetic properties of a surface which supports guided modes, as an alternative route for the coupling of propagating waves to evanescent modes across the light line, thus circumventing the need for subwavelength fabrication, and achieving the temporal counterpart of the classical Wood anomaly.
...
...