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Self-focusing up to the incident laser wavelength by an appropriate density ramp

Sadighi Bonabi, R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1017/S0263034611000589
  3. Abstract:
  4. This work is devoted to improving relativistic self-focusing of intense laser beam in underdense unmagnetized plasma. New density profiles are introduced to achieve beam width parameter up to the wavelength of the propagating laser. By investigating variations of the beam width parameter in presence of different density profiles it is found that the beam width parameter is considerably decreased for the introduced density ramp comparing with uniform density and earlier introduced density ramp profiles. By using this new density profile high intensity laser pulses are guided over several Rayleigh lengths with extremely small beam width parameter
  5. Keywords:
  6. Density ramp ; Propagating laser ; Self-focusing ; Underdense plasma ; Unmagnetized plasma ; Beam widths ; Density profile ; High intensity laser pulse ; Incident laser ; Intense laser ; Rayleigh lengths ; Relativistic self focusing ; Self-focusing ; Underdense plasmas ; Unmagnetized plasmas ; Plasma theory ; Focusing
  7. Source: Laser and Particle Beams ; Volume 29, Issue 4 , 2011 , Pages 453-458 ; 02630346 (ISSN)
  8. URL: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8456606&fileId=S0263034611000589