Nonlinear electron-photon scattering processes in vacuum

Frederic V. Hartemann

doi:10.1117/12.279387

1 November 1997 Nonlinear electron-photon scattering processes in vacuum

Frederic V. Hartemann

Proceedings Volume 3154, Coherent Electron-Beam X-Ray Sources: Techniques and Applications; (1997) https://doi.org/10.1117/12.279387
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

High field classical and quantum electrodynamical phenomena can now be studied experimentally, as new techniques to produce ultrahigh intensity laser pulses and synchronized relativistic electron beams are becoming more readily available. These techniques include chirped pulse amplification and photoelectron bunch acceleration in a high gradient rf gun. Applications range from x-ray free-electron lasers and next generation light sources to advanced laser acceleration concepts and (lambda) -(lambda) collider physics. The basic physics of nonlinear electron-photon scattering processes in vacuum is revived, within the framework of classical electrodynamics. 3D vacuum propagation and diffraction effects and their relation to the paraxial approximation are first considered, and the axial electromagnetic field components required to satisfy the gauge condition are derived. The nonlinear Lorentz dynamics and ultrahigh intensity Compton scattering, as well as radiative corrections described by the Dirac-Lorentz equation, are then discussed in detail. The nonlinear Doppler shift induced by laser radiation pressure during Compton scattering is analyzed and shown to yield chaotic optical spectra at ultrahigh intensities for linearly polarized light; a correction scheme, relying laser pulse shaping, is also briefly outlined. For circularly polarized light, an exact expression for the nonlinear Compton backscattered spectrum is derived.

Citation Download Citation

Frederic V. Hartemann "Nonlinear electron-photon scattering processes in vacuum", Proc. SPIE 3154, Coherent Electron-Beam X-Ray Sources: Techniques and Applications, (1 November 1997); https://doi.org/10.1117/12.279387

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KEYWORDS

Laser scattering

Pulsed laser operation

Doppler effect

Compton scattering

Electromagnetism

Scattering

Physics

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