Evanescent-wave acceleration of femtosecond electron bunches

J. Zawadzka, D.A. Jaroszynski, J.J. Carey, K. Wynne

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A 150-fs 800-nm 1-μJ laser was used to excited surface plasmons in the Kretschmann geometry in a 500-Å silver film. Multiphoton excitation results in the emission of femtosecond electron bunches (40 fC) as had been seen before. The electron beam is highly directional and perpendicular to the prism surface. A time-of-flight setup has been used to measure the kinetic-energy distribution of the photoelectrons. Surprisingly, we find that this distribution extends to energies as high as 40 eV. Theoretical calculations show that these high energies may be due to acceleration in the evanescent laser field that extends from the silver film out into the vacuum. These results suggest that femtosecond pulses with more energy per pulse or longer wavelength may be used to accelerate electrons to the keV or even MeV level.
LanguageEnglish
Pages324-328
Number of pages4
JournalNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume445
Issue number1-3
DOIs
Publication statusPublished - 1 May 2000

Fingerprint

evanescent waves
Silver
Plasmons
Electrons
Lasers
Photoelectrons
Prisms
Ultrashort pulses
silver
Kinetic energy
Electron beams
Laser pulses
electrons
Vacuum
pulses
plasmons
Wavelength
prisms
lasers
Geometry

Keywords

  • surface plasmons
  • ultrafast electron acceleration

Cite this

@article{c8ea38420cba404f9bb7589179cb688d,
title = "Evanescent-wave acceleration of femtosecond electron bunches",
abstract = "A 150-fs 800-nm 1-μJ laser was used to excited surface plasmons in the Kretschmann geometry in a 500-{\AA} silver film. Multiphoton excitation results in the emission of femtosecond electron bunches (40 fC) as had been seen before. The electron beam is highly directional and perpendicular to the prism surface. A time-of-flight setup has been used to measure the kinetic-energy distribution of the photoelectrons. Surprisingly, we find that this distribution extends to energies as high as 40 eV. Theoretical calculations show that these high energies may be due to acceleration in the evanescent laser field that extends from the silver film out into the vacuum. These results suggest that femtosecond pulses with more energy per pulse or longer wavelength may be used to accelerate electrons to the keV or even MeV level.",
keywords = "surface plasmons, ultrafast electron acceleration",
author = "J. Zawadzka and D.A. Jaroszynski and J.J. Carey and K. Wynne",
year = "2000",
month = "5",
day = "1",
doi = "10.1016/S0168-9002(00)00136-4",
language = "English",
volume = "445",
pages = "324--328",
journal = "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
number = "1-3",

}

Evanescent-wave acceleration of femtosecond electron bunches. / Zawadzka, J.; Jaroszynski, D.A.; Carey, J.J.; Wynne, K.

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 445, No. 1-3, 01.05.2000, p. 324-328.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evanescent-wave acceleration of femtosecond electron bunches

AU - Zawadzka, J.

AU - Jaroszynski, D.A.

AU - Carey, J.J.

AU - Wynne, K.

PY - 2000/5/1

Y1 - 2000/5/1

N2 - A 150-fs 800-nm 1-μJ laser was used to excited surface plasmons in the Kretschmann geometry in a 500-Å silver film. Multiphoton excitation results in the emission of femtosecond electron bunches (40 fC) as had been seen before. The electron beam is highly directional and perpendicular to the prism surface. A time-of-flight setup has been used to measure the kinetic-energy distribution of the photoelectrons. Surprisingly, we find that this distribution extends to energies as high as 40 eV. Theoretical calculations show that these high energies may be due to acceleration in the evanescent laser field that extends from the silver film out into the vacuum. These results suggest that femtosecond pulses with more energy per pulse or longer wavelength may be used to accelerate electrons to the keV or even MeV level.

AB - A 150-fs 800-nm 1-μJ laser was used to excited surface plasmons in the Kretschmann geometry in a 500-Å silver film. Multiphoton excitation results in the emission of femtosecond electron bunches (40 fC) as had been seen before. The electron beam is highly directional and perpendicular to the prism surface. A time-of-flight setup has been used to measure the kinetic-energy distribution of the photoelectrons. Surprisingly, we find that this distribution extends to energies as high as 40 eV. Theoretical calculations show that these high energies may be due to acceleration in the evanescent laser field that extends from the silver film out into the vacuum. These results suggest that femtosecond pulses with more energy per pulse or longer wavelength may be used to accelerate electrons to the keV or even MeV level.

KW - surface plasmons

KW - ultrafast electron acceleration

UR - http://dx.doi.org/10.1016/S0168-9002(00)00136-4

U2 - 10.1016/S0168-9002(00)00136-4

DO - 10.1016/S0168-9002(00)00136-4

M3 - Article

VL - 445

SP - 324

EP - 328

JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

T2 - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

IS - 1-3

ER -