Optimization of plasma amplifiers

James D. Sadler, Raoul M. G. M. Trines, Max Tabak, Dan Haberberger, Dustin H. Froula, Andrew S. Davies, Sara Bucht, Luís O. Silva, E. Paulo Alves, Frederico Fiúza, Luke Ceurvorst, Naren Ratan, Muhammad F. Kasim, Robert Bingham, Peter A. Norreys

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12 Citations (Scopus)
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Plasma amplifiers offer a route to side-step limitations on chirped pulse amplification and generate laser pulses at the power frontier. They compress long pulses by transferring energy to a shorter pulse via the Raman or Brillouin instabilities. We present an extensive kinetic numerical study of the three-dimensional parameter space for the Raman case. Further particle-in-cell simulations find the optimal seed pulse parameters for experimentally relevant constraints. The high-efficiency self-similar behavior is observed only for seeds shorter than the linear Raman growth time. A test case similar to an upcoming experiment at the Laboratory for Laser Energetics is found to maintain good transverse coherence and high-energy efficiency. Effective compression of a 10 kJ , nanosecond-long driver pulse is also demonstrated in a 15-cm-long amplifier.
Original languageEnglish
Article number053211
Number of pages6
JournalPhysical Review E
Issue number5
Publication statusPublished - 24 May 2017


  • laser pulses
  • Raman instability
  • Brillouin instability
  • kinetic numerical study
  • three-dimensional parameter space
  • particle-in-cell simulations


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