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Physics of Plasmas / Volume 15 / Issue 5 / INVITED PAPERS / Lasers, Particle Beams, Accelerators, Radiation Generation

Phys. Plasmas 15, 056704 (2008); doi:10.1063/1.2841527 (7 pages)

High-harmonic generation in cavitated plasmas a

a Paper KI2 2, Bull. Am. Phys. Soc. 52, 183 (2007).
C. B. Schroeder1, E. Esarey1,2, E. Comier-Michel1,2, and W. P. Leemans1,2

1Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
2Department of Physics, University of Nevada, Reno, Nevada 89507, USA

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(Received 18 November 2007; accepted 18 January 2008; published online 12 March 2008)

A method is proposed for producing coherent x-rays via high-harmonic generation using ultraintense lasers interacting with highly stripped ions in cavitated plasmas. This method relies on plasma cavitation by the wake of an intense drive beam (laser or electron beam) to produce an ion cavity. An ultrashort pulse laser propagating in the plasma-electron-free ion cavity generates laser harmonics. The longitudinal electron motion, which inhibits high-harmonic generation at high laser intensities, can be suppressed by the space-charge field in the ion cavity or by using a counterpropagating laser pulse. Periodic suppression of the longitudinal electron motion may also be used to quasi-phase-match. This method enables harmonic generation to be extended to the sub-Å regime.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. CAVITATION
    1. Laser-driven cavitation
    2. Beam-driven cavitation
  3. ELECTRON ORBITS
    1. Weak wakefield regime
    2. Strong wakefield regime
  4. HHG SPECTRUM
  5. SUMMARY

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KEYWORDS and PACS

Keywords

electron beams, laser beams, optical harmonic generation, plasma confinement, plasma X-ray sources

PACS

  • 42.65.Ky

    Frequency conversion; harmonic generation, including higher-order harmonic generation

  • 52.57.-z

    Laser inertial confinement

  • 52.25.Os

    Emission, absorption, and scattering of electromagnetic radiation

  • 52.59.Px

    Hard X-ray sources

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.2841527

PUBLICATION DATA

ISSN:

1070-664X (print)  
1089-7674 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

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