Ultrafast dynamics of surface electromagnetic waves in nanohole array on metallic film

Ultrafast dynamics of surface electromagnetic waves in nanohole array on metallic film

We study the ultrafast dynamics of surface electromagnetic waves photogenerated on aluminum film perforated with subwavelength holes array by means of transient photomodulation with 100 fs time resolution. We observed a pronounced blueshift of the resonant transmission band that reveals the importan...

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Veröffentlicht in:arXiv.org 2008-08
Hauptverfasser: Kirakosyan, A S, Tong, M, Shahbazyan, T V, Vardeny, Z V
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Attenuation
Boltzmann transport equation
Dynamics
Electromagnetic radiation
Hot electrons
Phonons
Physics - Materials Science
Polaritons
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creator Kirakosyan, A S
Tong, M
Shahbazyan, T V
Vardeny, Z V
description We study the ultrafast dynamics of surface electromagnetic waves photogenerated on aluminum film perforated with subwavelength holes array by means of transient photomodulation with 100 fs time resolution. We observed a pronounced blueshift of the resonant transmission band that reveals the important role of plasma attenuation in the dynamics and that is inconsistent with plasmon-polariton mechanism of extraordinary transmission. The transient photomodulation spectra were successfully modeled within the Boltzmann equation approach for the electron-phonon relaxation dynamics, involving non-equilibrium hot electrons and quasi-equilibrium phonons.
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subjects Aluminum
Attenuation
Boltzmann transport equation
Dynamics
Electromagnetic radiation
Hot electrons
Phonons
Physics - Materials Science
Polaritons
title Ultrafast dynamics of surface electromagnetic waves in nanohole array on metallic film
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