Evanescent-wave acceleration of ultrashort electron pulses

Justyna Zawadzka, Dino A. Jaroszynski, John J. Carey, Klaas Wynne

Research output: Contribution to journal › Article

64 Citations (Scopus)

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.
LanguageEnglish
Pages2130-2132
Number of pages2
JournalApplied Physics Letters
Volume79
Issue number14
DOIs
Publication statusPublished - 1 Oct 2001

Fingerprint

evanescent waves
pulses
plasmons
metal films
high power lasers
field emission
electrons
silver
vacuum
wavelengths
excitation
lasers
energy

Keywords

  • vanessence
  • ultrashort electron pulses
  • nanoscience
  • silver
  • gold
  • metallic thin films
  • surface plasmons
  • electron field emission
  • photoemission

Cite this

Zawadzka, Justyna ; Jaroszynski, Dino A. ; Carey, John J. ; Wynne, Klaas. / Evanescent-wave acceleration of ultrashort electron pulses. In: Applied Physics Letters. 2001 ; Vol. 79, No. 14. pp. 2130-2132.
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abstract = "High-power femtosecond laser pulses have been used to excite surface plasmons in 500 {\AA} 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.",
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Zawadzka, J, Jaroszynski, DA, Carey, JJ & Wynne, K 2001, 'Evanescent-wave acceleration of ultrashort electron pulses' Applied Physics Letters, vol. 79, no. 14, pp. 2130-2132. https://doi.org/10.1063/1.1406562

Evanescent-wave acceleration of ultrashort electron pulses. / Zawadzka, Justyna; Jaroszynski, Dino A.; Carey, John J.; Wynne, Klaas.

In: Applied Physics Letters, Vol. 79, No. 14, 01.10.2001, p. 2130-2132.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Evanescent-wave acceleration of ultrashort electron pulses

AU - Zawadzka, Justyna

AU - Jaroszynski, Dino A.

AU - Carey, John J.

AU - Wynne, Klaas

PY - 2001/10/1

Y1 - 2001/10/1

N2 - 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.

AB - 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.

KW - vanessence

KW - ultrashort electron pulses

KW - nanoscience

KW - silver

KW - gold

KW - metallic thin films

KW - surface plasmons

KW - electron field emission

KW - photoemission

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U2 - 10.1063/1.1406562

DO - 10.1063/1.1406562

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JO - Applied Physics Letters

T2 - Applied Physics Letters

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SN - 0003-6951

IS - 14

ER -

Zawadzka J, Jaroszynski DA, Carey JJ, Wynne K. Evanescent-wave acceleration of ultrashort electron pulses. Applied Physics Letters. 2001 Oct 1;79(14):2130-2132. https://doi.org/10.1063/1.1406562

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