Nonlinear Compton scattering in ultrashort laser pulses

Mackenroth, Felix; Piazza, A. Di

doi:10.1103/physreva.83.032106

Cited by 225 publications

(298 citation statements)

References 42 publications

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“…see Bulanov et al (2015) and literature cited therein). These effects manifest themselves through multi-photon Compton and Breit-Wheeler effects (Nikishov & Ritus 1964a,b;Ritus 1985) (see Narozhnyi & Fofanov (1996), Boca & Florescu (2009), Ehlotzky, Krajewska & Kamiśki (2009), Heinzl, Ilderton & Marklund (2010a), Heinzl, Seipt & Kämpfer (2010b, Mackenroth & Di Piazza (2011), Krajewska & Kamiński (2012), Titov et al (2012), Harvey, Heinzl & Ilderton (2009) for recent studies), i.e. through either photon emission by an electron or positron, or electron-positron pair production by a high energy photon, respectively.…”

Section: S V Bulanov and Othersmentioning

confidence: 99%

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

et al. 2017

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The multiple colliding laser pulse concept formulated by Bulanov et al. (Phys. Rev. Lett., vol. 104, 2010b, 220404) is beneficial for achieving an extremely high amplitude of coherent electromagnetic field. Since the topology of electric and magnetic fields of multiple colliding laser pulses oscillating in time is far from trivial and the radiation friction effects are significant in the high field limit, the dynamics of charged particles interacting with the multiple colliding laser pulses demonstrates remarkable features corresponding to random walk trajectories, limit circles, attractors, regular patterns and Lévy flights. Under extremely high intensity conditions the nonlinear dissipation mechanism stabilizes the particle motion resulting in the charged particle trajectory being located within narrow regions and in the occurrence of a new class of regular patterns made by the particle ensembles.

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Section: S V Bulanov and Othersmentioning

confidence: 99%

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

et al. 2017

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“…In order to appreciate the leap forward in understanding, in terms of both the quantum mechanical [20,21] and classical [22] descriptions of the electrodynamics obtained in the measurement, we should discuss briefly the previous progress down the path. Indeed, there have been, during recent decades with actual availability of the ultrashort intense lasers, numerous detailed theoretical investigations of the characteristics of laser-induced electron motion and corresponding radiation effects [23][24][25][26][27]. However, only few experimental activities were carried out in this field [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Observation of redshifting and harmonic radiation in inverse Compton scattering

Sakai

Pogorelsky

Williams

et al. 2015

Phys. Rev. ST Accel. Beams

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Inverse Compton scattering of laser photons by ultrarelativistic electron beam provides polarized x-to γ-ray pulses due to the Doppler blueshifting. Nonlinear electrodynamics in the relativistically intense linearly polarized laser field changes the radiation kinetics established during the Compton interaction. These are due to the induced figure-8 motion, which introduces an overall redshift in the radiation spectrum, with the concomitant emission of higher order harmonics. To experimentally analyze the strong field physics associated with the nonlinear electron-laser interaction, clear modifications to the angular and wavelength distributions of x rays are observed. The relativistic photon wave field is provided by the ps CO 2 laser of peak normalized vector potential of 0.5 < a L < 0.7, which due to the quadratic dependence of the strength of nonlinear phenomena on a L permits sufficient effects not observed in past 2nd harmonic study with a L ≈ 0.3 laser [M. Babzien et al., Phys. Rev. Lett. 96, 054802 (2006)]. The angular spectral characteristics are revealed using K-, L-edge, and high energy attenuation filters. The observation indicates existence of the electrons' longitudinal motion through frequency redshifting understood as the mass shift effect. Thus, the 3rd harmonic radiation has been observed containing on-axis x-ray component that is directly associated with the induced figure-8 motion. These are further supported by an initial evidence of off-axis 2nd harmonic radiation produced in a circularly polarized laser wave field. Total x-ray photon number per pulse, scattered by 65 MeV electron beam of 0.3 nC, at the interaction point is measured to be approximately 10 9 .

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“…Note that each of the terms in the expansion (24) possesses two real stationary points, in contrast to the non-expanded integrals (14) for which the stationary point lie off the real axis [47,76]. The stationarity condition…”

Section: Ponderomotive Broadening and Its Compensation By Laser mentioning

confidence: 99%

Narrowband inverse Compton scattering x-ray sources at high laser intensities

et al. 2015

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Narrowband x-and gamma-ray sources based on the inverse Compton scattering of laser pulses suffer from a limitation of the allowed laser intensity due to the onset of nonlinear effects that increase their bandwidth. It has been suggested that laser pulses with a suitable frequency modulation could compensate this ponderomotive broadening and reduce the bandwidth of the spectral lines, which would allow to operate narrowband Compton sources in the high-intensity regime. In this paper we, therefore, present the theory of nonlinear Compton scattering in a frequency modulated intense laser pulse. We systematically derive the optimal frequency modulation of the laser pulse from the scattering matrix element of nonlinear Compton scattering, taking into account the electron spin and recoil. We show that, for some particular scattering angle, an optimized frequency modulation completely cancels the ponderomotive broadening for all harmonics of the backscattered light. We also explore how sensitive this compensation depends on the electron beam energy spread and emittance, as well as the laser focusing.

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Nonlinear Compton scattering in ultrashort laser pulses

Cited by 225 publications

References 42 publications

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

Observation of redshifting and harmonic radiation in inverse Compton scattering

Narrowband inverse Compton scattering x-ray sources at high laser intensities

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