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Resonant second harmonic generation in plasma by self-focused twisted beam

Vaziri, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.optcom.2014.12.020
  3. Publisher: Elsevier , 2015
  4. Abstract:
  5. The resonant second harmonic generation in the presence of a wiggler magnetic field by twisted laser plasma interaction is surveyed. The wiggler magnetic field provides additional momentum required for the phase matching. The Laguerre-Gaussian modes can be used to control the self-focusing and improve the second harmonic generation in laser plasma interaction. The wave equations for the fundamental and the second harmonic fields have been solved in the paraxial approximation. The generation of the second harmonic considering self-focusing is investigated. Also, the dependence of the second harmonic power on the propagation distance for different values of initial fundamental beam intensity, vortex charge number of the doughnut main beam and plasma density has been obtained
  6. Keywords:
  7. Laguerre-Gaussian beam and wiggler magnetic field ; Second harmonic generation ; Beam plasma interactions ; Focusing ; Gaussian beams ; Harmonic analysis ; Laser beams ; Laser fusion ; Laser produced plasmas ; Magnetic fields ; Magnetoplasma ; Nonlinear optics ; Phase matching ; Plasma density ; Plasma interactions ; Wave equations ; Wave plasma interactions ; Wigglers ; Laguerre Gaussian beams ; Laguerre-Gaussian modes ; Laser-plasma interactions ; Paraxial approximations ; Propagation distances ; Second-harmonic fields ; Second-harmonic power ; Self-focusing ; Harmonic generation
  8. Source: Optics Communications ; Volume 341 , April , 2015 , Pages 295-301 ; 00304018 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0030401814011717