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Hur, Min Sup
Computational Plasma Lab
Research Interests
  • Laser-Plasma Electron Accelerator and Table-top Femto Hard X-ray generation
  • Plasma-based THz generation
  • PIC and fluid code development
  • Reduced Laser-Plasma modelling
  • Capillary Discharge Systems for Guidied Laser Wakefield Accelerators

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Pulse width effects on Raman backward laser amplification

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Title
Pulse width effects on Raman backward laser amplification
Author
Hur, Min SupGupta, D. N.Suk, Hyyong
Keywords
PLASMA; SIMULATIONS; AMPLIFIERS; BACKSCATTERING; FOCUSABILITY; NOISE; PUMP
Issue Date
2007-09
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF PHYSICS D-APPLIED PHYSICS, v.40, no.17, pp.5155 - 5160
Abstract
The effects of the longitudinal pulse width were studied in Raman backward amplification (RBA) of laser pulses in plasmas. In RBA systems, which utilize Raman backscatter in plasmas, it is generally required that a long pump laser pulse, whose longitudinal pulse duration is typically tens of picoseconds, propagates more than a few millimetres of gas jet or capillary plasmas. However, from the experimental point of view, a short propagation distance of the pump pulse is more desirable to avoid various technical difficulties and physical instabilities. In this paper, the change in the characteristics of RBA systems for varying widths of the pump pulse is studied by fluid and kinetic simulations. The effects of the initial width of the seed pulse are also addressed.
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DOI
10.1088/0022-3727/40/17/021
ISSN
0022-3727
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PHY_Journal Papers
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