Quantum electrodynamics resonances in a pulsed laser field

Roshchupkin, S. P.; Lebed, A. A.; Padusenko, E. A.; Voroshilo, A. I.

doi:10.1134/s1054660x12060084

Cited by 108 publications

(253 citation statements)

References 46 publications

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“…In Ref. [19], the same approach has been persuaded in the context of a resonant Compton scattering. However, for intense few-cycle laser pulses which are used nowadays in experimental setups, a more adequate treatment of the temporal structure of an incident laser pulse is necessary.…”

Section: Introductionmentioning

confidence: 90%

Compton process in intense short laser pulses

2012

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The spectra of Compton radiation emitted during electron scattering off an intense laser beam are calculated using the framework of strong-field quantum electrodynamics. We model these intense laser beams as finite length plane-wave-fronted pulses, similar to Neville and Rohrlich [Phys. Rev. D 3, 1692 (1971)], or as trains of such pulses. Expressions for energy and angular distributions of Compton photons are derived such that a comparison of both situations becomes meaningful. Comparing frequency distributions for both an isolated laser pulse and a laser pulse train, we find a very good agreement between the results for long pulse durations which breaks down however for ultrashort laser pulses. The dependence of angular distributions of emitted radiation on a pulse duration is also investigated. Pronounced asymmetries of angular distributions are found for very short laser pulses, which gradually disappear with increasing the number of laser field oscillations. Those asymmetries are attributed to asymmetries of the vector potential describing an incident laser beam.

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Section: Introductionmentioning

confidence: 90%

Compton process in intense short laser pulses

2012

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“…Another possible scenario of producing electron-positron pairs is the nonlinear BreitWheeler process, which is the main topic of this paper. For recent reviews concerning electron-positron pair creation, we refer the reader to [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Coherent combs of antimatter from nonlinear electron-positron-pair creation

Krajewska

Kamiński²

2014

Phys. Rev. A

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Electron-positron pair creation in collisions of a modulated laser pulse with a high-energy photon (nonlinear Breit-Wheeler process) is studied by means of strong-field quantum electrodynamics. It is shown that the driving pulse modulations lead to appearance of comb structures in the energy spectra of produced positrons (electrons). It is demonstrated that these combs result from a coherent enhancement of probability amplitudes of pair creation from different modulations of the laser pulse. Thus, resembling the Young-double slit experiment for anti-matter (matter) waves.

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“…Using the explicit form of χ p (r,t) in Eq. (14) and the following relation for the Dirac δ function, re…”

Section: Appendix: Derivation Of the Tder Expression For The Brs Dipomentioning

confidence: 99%

“…Note also that our considerations are limited to the nonrelativistic case and to the dipole approximation for the electron interaction with the laser field; relativistic effects in laser-assisted BrS (cf., e.g., Refs. [11][12][13][14]) are beyond the scope of this paper.…”

Section: Introductionmentioning

confidence: 99%

Resonant electron-atom bremsstrahlung in an intense laser field

et al. 2014

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Zheltukhin, A. N.; Flegel, A. V.; Frolov, M. V.; Manakov, N. L.; and Starace, Anthony F., "Resonant electron-atom bremsstrahlung in an intense laser field" (2014 We analyze a resonant mechanism for spontaneous laser-assisted electron bremsstrahlung (BrS) involving the resonant transition (via either laser-assisted electron-ion recombination or electron-atom attachment) into a laser-dressed intermediate quasibound state (corresponding, respectively, to either a field-free neutral atom or a negative-ion bound state) accompanied by ionization or detachment of this state by the laser field. This mechanism leads to resonant enhancement (by orders of magnitude) of the BrS spectral density for emitted photon energies corresponding to those for laser-assisted recombination or attachment. We present an accurate parametrization of the resonant BrS amplitude in terms of the amplitudes for nonresonant BrS, for recombination or attachment to the intermediate state, and for ionization or detachment of this state. The high accuracy of our general analytic parametrization of the resonant BrS cross section is shown by comparison with exact numerical results for laser-assisted BrS spectra obtained within time-dependent effective range theory. Numerical estimates of resonant BrS in electron scattering from a Coulomb potential are also presented.

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Quantum electrodynamics resonances in a pulsed laser field

Cited by 108 publications

References 46 publications

Compton process in intense short laser pulses

Compton process in intense short laser pulses

Coherent combs of antimatter from nonlinear electron-positron-pair creation

Resonant electron-atom bremsstrahlung in an intense laser field

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