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Evanescent-wave acceleration of ultrashort electron pulses

Zawadzka, Justyna and Jaroszynski, Dino A. and Carey, John J. and Wynne, Klaas (2001) Evanescent-wave acceleration of ultrashort electron pulses. Applied Physics Letters, 79 (14). pp. 2130-2132. ISSN 0003-6951

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Abstract

High-power femtosecond laser pulses have been used to excite surface plasmons in 500 Å silver and gold films. Nonlinear excitation results in the emission of electron bunches through multiphoton excitation at low power and laser-induced field emission at high power. The energies of photoelectrons are found to extend as high as 0.4 keV. Calculations show that these high energies are due to ponderomotive acceleration in an evanescent field extending from the metal film out into the vacuum. The theoretical calculations suggest that femtosecond electron pulses with relativistic energies can be generated using longer wavelengths or by developing the surface morphology.

Item type: Article
ID code: 3101
Keywords: vanessence, ultrashort electron pulses, nanoscience, silver, gold, metallic thin films, surface plasmons, electron field emission, photoemission, Solid state physics. Nanoscience
Subjects: Science > Physics > Solid state physics. Nanoscience
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 02 Apr 2007
    Last modified: 16 Jul 2013 17:50
    URI: http://strathprints.strath.ac.uk/id/eprint/3101

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