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Title: Axially Modulated Plasma Waveguides

We demonstrate two techniques for making periodically modulated plasma waveguides-one with sharp, stable voids as short as 50 {mu}m with a period as small as 200 {mu}m, and another which modulates the waveguide diameter with a corrugation period as short as 35 {mu}m[1]. These features persist as the plasma expands for the full lifetime of the waveguide (>6 ns). The waveguides were made using the hydrodynamic shock method in a cluster jet using hydrogen, nitrogen, and argon. We demonstrate guided propagation at intensities up to 2x10{sup 17} W/cm{sup 2}, limited by our laser energy currently available. This technique is useful for quasi-phase matching to allow efficient coupling of laser energy to acceleration of relativistic electrons or generation of coherent electromagnetic radiation at selected frequencies.
Authors:
;  [1] ;  [2] ; ;  [1] ;  [2] ;  [1] ;  [2] ;  [2]
  1. Institute for Research in Electronics and Applied Physics, University of Maryland College Park, MD 20742 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
21255208
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1086; Journal Issue: 1; Conference: 13. advanced accelerator concepts workshop, Santa Cruz, CA (United States), 27 Jul - 2 Aug 2008; Other Information: DOI: 10.1063/1.3080894; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; ARGON; ELECTROMAGNETIC RADIATION; ELECTRONS; HYDRODYNAMIC MODEL; HYDROGEN; LASERS; LIFETIME; NITROGEN; PERIODICITY; PLASMA; RELATIVISTIC RANGE; WAVEGUIDES