Transient States to Control the Electromagnetic Response of Space-time Dispersive Media
Metadatos
Mostrar el registro completo del ítemAutor
Zapata Cano, Pablo H.; Moreno Rodríguez, Salvador; Amanatiadis, Stamatios; Alex Amor, Antonio; Zaharis, Zaharias D.; Molero Jiménez, CarlosEditorial
American Physical Society
Materia
Space-time Dispersive Materials Transient analysis Drude material
Fecha
2024-12-10Referencia bibliográfica
P. H. Zapata-Cano, S. Moreno-Rodríguez, S. Amana- tiadis, A. Alex-Amor, Z. D. Zaharis, and C. Molero, Transient states to control the electromagnetic response of space-time dispersive media, Phys. Rev. B 110, 235125 (2024)
Patrocinador
Grant No. IJC2020- 043599-I funded by MICIU/AEI/10.13039/501100011033 and by European Union NextGenerationEU/PRTR. Spanish Government under Project PID2020-112545RB-C54, PDC2022-133900-I00, PDC2023-145862-I00, TED2021- 129938B-I00 and TED2021-131699B-I00Resumen
In this paper, we study the dynamic formation of transients when plane waves impinge on a dispersive slab
that abruptly changes its electrical properties in time. The time-varying slab alternates between air and metal-like
states, whose frequency dispersion is described by the Drude model. It is shown how the physics of this complex
system can be well described with the joint combination of two terms: one associated with temporal refractions
and the other associated with spatial refractions. To test the validity of the approach, some analytical results are
compared with a self-implemented finite-difference time-domain method. Results show how the transients that
occur after the abrupt temporal changes can shape the overall steady-state response of the space-time system.
In fact, far from always being detrimental, these transient states can be conveniently used to perform frequency
conversion or to amplify or attenuate the electromagnetic fields.