Electrons in a relativistic-intensity laser field: generation of zeptosecond electromagnetic pulses and energy spectrum of the accelerated electrons

We study the motion of an electron and emission of electromagnetic waves by an electron in the field of a relativistically intense laser pulse. The dynamics of the electron is described by the Newton equation with the Lorentz force in the right-hand side. It is shown that the electrons may be ejecte...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 41; no. 8; pp. 729 - 734
Main Authors Andreev, A A, Galkin, A L, Kalashnikov, M P, Korobkin, V V, Romanovsky, Mikhail Yu, Shiryaev, O B
Format Journal Article
LanguageEnglish
Published United States IOP Publishing 31.08.2011
Subjects
CLASSICAL MECHANICS
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
ENERGY SPECTRA
FERMIONS
LASER RADIATION
LEPTONS
LORENTZ FORCE
MECHANICS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PULSES
RADIATIONS
RELATIVISTIC RANGE
SPECTRA
TRAJECTORIES
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Summary:We study the motion of an electron and emission of electromagnetic waves by an electron in the field of a relativistically intense laser pulse. The dynamics of the electron is described by the Newton equation with the Lorentz force in the right-hand side. It is shown that the electrons may be ejected from the interaction region with high energy. The energy spectrum of these electrons and the technique of using the spectrum to assess the maximal intensity in the focus are analysed. It is found that electromagnetic radiation of an electron moving in an intense laser field occurs within a small angle around the direction of the electron trajectory tangent. The tangent quickly changes its direction in space; therefore, electromagnetic radiation of the electron in the far-field zone in a certain direction in the vicinity of the tangent is a short pulse with a duration as short as zeptoseconds. The calculation of the temporary and spectral distribution of the radiation field is carried out. (superintense laser fields)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2011v041n08ABEH014610