Optically controlled dense current structures driven by relativistic plasma aperture-induced diffraction

Bruno Gonzalez-Izquierdo, Ross J. Gray, Martin King, Rachel J. Dance, Robbie Wilson, John McCreadie, Nicholas M. H. Butler, Remi Capdessus, Steve Hawkes, James S. Green, Marco Borghesi, David Neely, Paul McKenna

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The collective response of charged particles to intense fields is intrinsic to plasma accelerators and radiation sources, relativistic optics and many astrophysical phenomena. Here we show that a \textit{relativistic plasma aperture} is generated in thin foils by intense laser light, resulting in the fundamental optical process of diffraction. The plasma electrons collectively respond to the resulting laser near-field diffraction pattern, producing a beam of energetic electrons with spatial structure which can be controlled by variation of the laser pulse parameters. It is shown that static electron beam, and induced magnetic field, structures can be made to rotate at fixed or variable angular frequencies depending on the degree of ellipticity in the laser polarization. The concept is demonstrated numerically and verified experimentally, and is an important step towards optical control of charged particle dynamics in laser-driven dense plasma sources.
LanguageEnglish
Pages505-512
Number of pages8
JournalNature Physics
Volume12
DOIs
Publication statusPublished - 11 Jan 2016

Fingerprint

relativistic plasmas
apertures
diffraction
lasers
charged particles
plasma accelerators
optical control
dense plasmas
ellipticity
electron plasma
radiation sources
foils
near fields
astrophysics
diffraction patterns
optics
electron beams
polarization
pulses
magnetic fields

Keywords

  • plasma accelerators
  • radiation sources
  • relativistic plasma

Cite this

Gonzalez-Izquierdo, Bruno ; Gray, Ross J. ; King, Martin ; Dance, Rachel J. ; Wilson, Robbie ; McCreadie, John ; Butler, Nicholas M. H. ; Capdessus, Remi ; Hawkes, Steve ; Green, James S. ; Borghesi, Marco ; Neely, David ; McKenna, Paul. / Optically controlled dense current structures driven by relativistic plasma aperture-induced diffraction. In: Nature Physics. 2016 ; Vol. 12. pp. 505-512.
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abstract = "The collective response of charged particles to intense fields is intrinsic to plasma accelerators and radiation sources, relativistic optics and many astrophysical phenomena. Here we show that a \textit{relativistic plasma aperture} is generated in thin foils by intense laser light, resulting in the fundamental optical process of diffraction. The plasma electrons collectively respond to the resulting laser near-field diffraction pattern, producing a beam of energetic electrons with spatial structure which can be controlled by variation of the laser pulse parameters. It is shown that static electron beam, and induced magnetic field, structures can be made to rotate at fixed or variable angular frequencies depending on the degree of ellipticity in the laser polarization. The concept is demonstrated numerically and verified experimentally, and is an important step towards optical control of charged particle dynamics in laser-driven dense plasma sources.",
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Optically controlled dense current structures driven by relativistic plasma aperture-induced diffraction. / Gonzalez-Izquierdo, Bruno; Gray, Ross J.; King, Martin; Dance, Rachel J.; Wilson, Robbie; McCreadie, John; Butler, Nicholas M. H.; Capdessus, Remi; Hawkes, Steve; Green, James S.; Borghesi, Marco; Neely, David; McKenna, Paul.

In: Nature Physics, Vol. 12, 11.01.2016, p. 505-512.

Research output: Contribution to journalArticle

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AU - Butler, Nicholas M. H.

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