Nonlinear Compton scattering of ultrashort intense laser pulses
Abstract
The scattering of temporally shaped intense laser pulses off electrons is discussed by means of manifestly covariant quantum electrodynamics. We employ a framework based on Volkov states with a timedependent laser envelope in lightcone coordinates within the Furry picture. An expression for the cross section is constructed unambiguously in respect of the pulse length. A broad distribution of scattered photons with a rich pattern of subpeaks like that obtained in Thomson scattering is found. These broad peaks may overlap at sufficiently high laser intensity, rendering inappropriate the notion of individual harmonics. The limit of monochromatic plane waves as well as the classical limit of Thomson scattering are discussed. As a main result, a scaling law is presented connecting the Thomson limit with the general result for arbitrary kinematics. In the overlapping regions of the spectral density, the classical and quantum calculations give different results, even in the Thomson limit. Thus, a phasespace region is identified where the differential photon distribution is strongly modified by quantum effects.
 Authors:

 HelmholtzZentrum DresdenRossendorf, P.O. Box 510119, D01314 Dresden (Germany)
 Publication Date:
 OSTI Identifier:
 21537107
 Resource Type:
 Journal Article
 Journal Name:
 Physical Review. A
 Additional Journal Information:
 Journal Volume: 83; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.83.022101; (c) 2011 American Institute of Physics; Journal ID: ISSN 10502947
 Country of Publication:
 United States
 Language:
 English
 Subject:
 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPTON EFFECT; CROSS SECTIONS; ELECTRONS; HARMONICS; LASER RADIATION; LIGHT CONE; MONOCHROMATIC RADIATION; NONLINEAR PROBLEMS; PHASE SPACE; PHOTONS; PULSES; QUANTUM ELECTRODYNAMICS; SCALING LAWS; SPECTRAL DENSITY; THOMSON SCATTERING; TIME DEPENDENCE; WAVE PROPAGATION; BASIC INTERACTIONS; BOSONS; ELASTIC SCATTERING; ELECTRODYNAMICS; ELECTROMAGNETIC INTERACTIONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FUNCTIONS; INELASTIC SCATTERING; INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL SPACE; OSCILLATIONS; QUANTUM FIELD THEORY; RADIATIONS; SCATTERING; SPACE; SPACETIME; SPECTRAL FUNCTIONS
Citation Formats
Seipt, D, and Kaempfer, B. Nonlinear Compton scattering of ultrashort intense laser pulses. United States: N. p., 2011.
Web. doi:10.1103/PHYSREVA.83.022101.
Seipt, D, & Kaempfer, B. Nonlinear Compton scattering of ultrashort intense laser pulses. United States. doi:10.1103/PHYSREVA.83.022101.
Seipt, D, and Kaempfer, B. Tue .
"Nonlinear Compton scattering of ultrashort intense laser pulses". United States. doi:10.1103/PHYSREVA.83.022101.
@article{osti_21537107,
title = {Nonlinear Compton scattering of ultrashort intense laser pulses},
author = {Seipt, D and Kaempfer, B},
abstractNote = {The scattering of temporally shaped intense laser pulses off electrons is discussed by means of manifestly covariant quantum electrodynamics. We employ a framework based on Volkov states with a timedependent laser envelope in lightcone coordinates within the Furry picture. An expression for the cross section is constructed unambiguously in respect of the pulse length. A broad distribution of scattered photons with a rich pattern of subpeaks like that obtained in Thomson scattering is found. These broad peaks may overlap at sufficiently high laser intensity, rendering inappropriate the notion of individual harmonics. The limit of monochromatic plane waves as well as the classical limit of Thomson scattering are discussed. As a main result, a scaling law is presented connecting the Thomson limit with the general result for arbitrary kinematics. In the overlapping regions of the spectral density, the classical and quantum calculations give different results, even in the Thomson limit. Thus, a phasespace region is identified where the differential photon distribution is strongly modified by quantum effects.},
doi = {10.1103/PHYSREVA.83.022101},
journal = {Physical Review. A},
issn = {10502947},
number = 2,
volume = 83,
place = {United States},
year = {2011},
month = {2}
}