Nonlinear Thomson scattering of intense laser pulses from beams and plasmas

Esarey, E.; Ride, S. K.; Sprangle, P.

doi:10.1103/physreve.48.3003

Cited by 438 publications

(439 citation statements)

References 37 publications

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“…Using the betatron orbits given above, the radiation spectrum can be calculated with conventional techniques [36] - [38]. It is convenient to introduce spherical coordinates (r, θ, φ) and unit vectors (e r , e θ , e φ ), where x = r sin θ cos φ, y = r sin θ sin φ, z = r cos θ, and e r = sin θ cos φ e x + sin θ sin φ e y + cos θ e z ,…”

Section: Synchrotron Radiationmentioning

confidence: 99%

Synchrotron radiation from electron beams in plasma-focusing channels

et al. 2002

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Spontaneous radiation emitted from relativistic electrons undergoing betatron motion in a plasma focusing channel is analyzed and applications to plasma wakefield accelerator experiments and to the ion channel laser (ICL) are discussed. Important similarities and differences between a free electron laser (FEL) and an ICL are delineated. It is shown that the frequency of spontaneous radiation is a strong function of the betatron strength parameter a β , which plays a similar role to that of the wiggler strength parameter in a conventional FEL. For a β > ∼ 1, radiation is emitted in numerous harmonics.Furthermore, a β is proportional to the amplitude of the betatron orbit, which varies for every electron in the beam. The radiation spectrum emitted from an electron beam is calculated by averaging the single electron spectrum over the electron distribution. This leads to a frequency broadening of the radiation spectrum, which places serious limits on the possibility of realizing an ICL.03.65. 02.60.Cb, Typeset using REVT E X 1

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Section: Synchrotron Radiationmentioning

confidence: 99%

Synchrotron radiation from electron beams in plasma-focusing channels

et al. 2002

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“…While the theory of Thomson backscattered radiation is well known and has been well documented [18][19][20][21][22][23][24], there remains a need to have a complete three-dimensional time resolved computational capability for the full determination of the temporally and spatially resolved spectra and intensity distributions produced from a Thomson interaction of arbitrary geometry. This capability is crucial for both the design of Thomson scattered x-ray sources, as well as future experiments and applications utilizing such sources.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional time and frequency-domain theory of femtosecond x-ray pulse generation through Thomson scattering

Brown

Hartemann

2004

Phys. Rev. ST Accel. Beams

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The generation of high intensity, ultrashort x-ray pulses enables exciting new experimental capabilities, such as femtosecond pump-probe experiments used to temporally resolve material structural dynamics on atomic time scales. Thomson backscattering of a high intensity laser pulse with a bright relativistic electron bunch is a promising method for producing such high-brightness x-ray pulses in the 10 -100 keV range within a compact facility. While a variety of methods for producing subpicosecond x-ray bursts by Thomson scattering exist, including compression of the electron bunch to subpicosecond bunch lengths and/or colliding a subpicosecond laser pulse in a side-on geometry to minimize the interaction time, a promising alternative approach to achieving this goal while maintaining ultrahigh brightness is the production of a time-correlated (or chirped) x-ray pulse in conjunction with pulse slicing or compression. We present the results of a complete analysis of this process using a recently developed 3D time and frequency-domain code for analyzing the spatial, temporal, and spectral properties an x-ray beam produced by relativistic Thomson scattering. Based on the relativistic differential cross section, this code has the capability to calculate time and space dependent spectra of the x-ray photons produced from linear Thomson scattering for both bandwidth-limited and chirped incident laser pulses. Spectral broadening of the scattered x-ray pulse resulting from the incident laser bandwidth, laser focus, and the transverse and longitudinal phase space of the electron beam were examined. Simulations of chirped x-ray pulse production using both a chirped electron beam and a chirped laser pulse are presented. Required electron beam and laser parameters are summarized by investigating the effects of beam emittance, energy spread, and laser bandwidth on the scattered x-ray spectrum. It is shown that sufficient temporal correlation in the scattered x-ray spectrum to produce sub-100 fs temporal slice resolution can be produced from state-of-the-art, high-brightness electron beams without the need to perform longitudinal compression on the electron bunch.

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“…Neglecting higher harmonics, the energy of the emitted photons for the case of a near head-on collision of the laser pulse and a bunch of relativistic electrons is given by [27,28] …”

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confidence: 99%

Tunable All-Optical Quasimonochromatic Thomson X-Ray Source in the Nonlinear Regime

et al. 2015

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We present an all-laser-driven, energy-tunable, and quasimonochromatic x-ray source based on Thomson scattering from laser-wakefield-accelerated electrons. One part of the laser beam was used to drive a few-fs bunch of quasimonoenergetic electrons, while the remainder was backscattered off the bunch at weakly relativistic intensity. When the electron energy was tuned from 17-50 MeV, narrow x-ray spectra peaking at 5-42 keV were recorded with high resolution, revealing nonlinear features. We present a large set of measurements showing the stability and practicality of our source.

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Nonlinear Thomson scattering of intense laser pulses from beams and plasmas

Cited by 438 publications

References 37 publications

Synchrotron radiation from electron beams in plasma-focusing channels

Synchrotron radiation from electron beams in plasma-focusing channels

Three-dimensional time and frequency-domain theory of femtosecond x-ray pulse generation through Thomson scattering

Tunable All-Optical Quasimonochromatic Thomson X-Ray Source in the Nonlinear Regime

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