Electron-positron pair production in the field of superstrong oppositely directed laser beams

Avetissian, H. K.; Avetissian, A. K.; Mkrtchian, G. F.; Sedrakian, Kh. V.

doi:10.1103/physreve.66.016502

Cited by 93 publications

(123 citation statements)

References 7 publications

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“…This result has been found by Popov [34] and further developed by other authors [37][38][39]53] for a single-mode OEF. In this subsection, we show how both properties are manifest in the presence of a multimode OEF and within the framework of nonequilibrium quantum field theory.…”

Section: B Resonance Effects and Rabi-like Oscillations In A Multimosupporting

confidence: 85%

“…The idea has been further extended to the case in which both pulses are Sauter fields with different time scales [32,33]. However, in more realistic setups it is expected that the subcycle structure of an oscillating electric field (OEF) plays a relevant role as it provides a phenomenology characterized by resonant effects and Rabi-like oscillations [34][35][36][37][38][39]. To the best of our knowledge, the study of such a problem in a bifrequent OEF composed of a strong and a weak mode has not been addressed so far.…”

Section: Introductionmentioning

confidence: 99%

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Electron-positron pair production in a bifrequent oscillating electric field

2014

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The production of electron-positron pairs from the quantum vacuum polarized by the superposition of a strong and a perturbative oscillating electric field mode is studied. Our outcomes rely on a nonequilibrium quantum field theoretical approach, described by the quantum kinetic BoltzmannVlasov equation. By superimposing the perturbative mode, the characteristic resonant effects and Rabi-like frequencies in the single-particle distribution function are modified, as compared to the predictions resulting from the case driven by a strong oscillating field mode only. This is demonstrated in the momentum spectra of the produced pairs. Moreover, the dependence of the total number of pairs on the intensity parameter of each mode is discussed and a strong enhancement found for large values of the relative Keldysh parameter.

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Section: B Resonance Effects and Rabi-like Oscillations In A Multimosupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Electron-positron pair production in a bifrequent oscillating electric field

2014

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“…For the case of the type-I envelope shapes this quantity oscillates as a function of N c (see, e.g., Refs. [11][12][13][14]). …”

Section: Type-i Envelope Shapesmentioning

confidence: 99%

Pulse shape effects on the electron-positron pair production in strong laser fields

2017

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The pair-production process in the presence of strong linearly polarized laser fields with a subcycle structure is considered. Laser pulses with different envelope shapes are examined by means of a nonperturbative numerical approach.As generic cases, we analyze two different "flat" envelope shapes and two shapes without a plateau as a function of various characteristic parameters including the carrier-envelope phase, respectively. The resonant Rabi oscillations, the momentum distribution of particles created, and the total number of pairs are studied. It is demonstrated that all these characteristics are very sensitive to the pulse shape.

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“…[6,9]. These features provide novel regimes for ion acceleration [10][11][12][13][14], relativistic high order harmonics generation [15][16][17], light frequency upshifting [20][21][22][23][24][25][26], and laser pulse shaping [9,[27][28][29][30][31]. They become important when the foil thickness is shorter than, or of the order of, both the laser wavelength and the plasma collisionless skin depth.…”

Section: Introductionmentioning

confidence: 99%