Imagen de Portada

Space-Time Surface Plasmon Polaritons: A New Propagation-Invariant Surface Wave Packet

Guardado en:
Publicado en:arXiv.org (Mar 8, 2020), p. n/a
Autor principal: Schepler, Kenneth L
Otros Autores: Yessenov, Murat, Zhiyenbayev, Yertay, Abouraddy, Ayman F
Publicado:
Cornell University Library, arXiv.org
Materias:
Polaritons
Group velocity
Propagation
Spacetime
Wave propagation
Invariants
Material properties
Wave packets
Projectiles
Computer simulation
Surface waves
Acceso en línea:Citation/Abstract
Full text outside of ProQuest
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
Resumen:We introduce the unique class of propagation-invariant surface plasmon polaritons (SPPs) representing pulsed surface wave packets propagating along unpatterned metal-dielectric interfaces and are localized in all dimensions - with potentially subwavelength transverse spatial widths. The characteristic features of such linear diffraction-free, dispersion-free `plasmonic bullets' stem from tight spatio-temporal correlations incorporated into the SPP spectral support domain, and we thus call them `space-time' SPPs. We show that the group velocity of space-time SPP wave packets can be readily tuned to subluminal, superluminal, and even negative values by tailoring the spatio-temporal field structure independently of any material properties. We present an analytical framework and numerical simulations for the propagation of space-time SPPs in comparison with traditional pulsed SPPs whose spatial and temporal degrees of freedom are separable, thereby verifying the propagation-invariance of the former.
ISSN:2331-8422
Fuente:Engineering Database