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Subfemtosecond electron bunch generation by a tightly focused laser pulse

Published online by Cambridge University Press:  20 December 2006

S. MASUDA ,
K. NAKAJIMA ,
M. KANDO ,
H. KOTAKI ,
K. KOYAMA ,
E. MIURA ,
S. KATO ,
M. ADACHI  and
T. WATANABE
S. MASUDA
Affiliation:
National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage, Chiba, Chiba 263-8555, Japan
K. NAKAJIMA
Affiliation:
High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
M. KANDO
Affiliation:
Japan Atomic Energy Research Institute, 8-1 Umemi-dai, Kizu, Kyoto 619-0215, Japan
H. KOTAKI
Affiliation:
Japan Atomic Energy Research Institute, 8-1 Umemi-dai, Kizu, Kyoto 619-0215, Japan
K. KOYAMA
Affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
E. MIURA
Affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
S. KATO
Affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
M. ADACHI
Affiliation:
Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8577, Japan
T. WATANABE
Affiliation:
Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
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Abstract

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Three-dimensional electron motion in a linearly polarized tightly focused laser field is numerically calculated. A high-intensity laser pulse focused on the free electrons in vacuum generates relativistic electron bunches whose length is shorter than the laser wavelength. The extremely short electron bunches with low-energy spread less than 1% are generated for a wide range of the laser parameters.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 6 , December 2006 , pp. 1277 - 1280
Copyright
2006 Cambridge University Press