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This content will become publicly available on May 24, 2018

Title: Optimization of plasma amplifiers

Here, 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 10kJ, nanosecond-long driver pulse is also demonstrated in a 15-cm-long amplifier.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [4] ;  [4] ;  [5] ;  [6] ;  [6] ;  [1] ;  [1] ;  [1] ;  [7] ;  [8]
  1. Univ. of Oxford, Oxford (United Kingdom)
  2. STFC Rutherford Appleton Lab., Oxon (United Kingdom)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Lab. for Laser Energetics, Rochester, NY (United States)
  5. Univ. de Lisboa, Lisbon (Portugal)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  7. STFC Rutherford Appleton Lab., Oxon (United Kingdom); Univ. of Strathclyde, Glasgow (United Kingdom)
  8. Univ. of Oxford, Oxford (United Kingdom); STFC Rutherford Appleton Lab., Oxon (United Kingdom)
Publication Date:
Grant/Contract Number:
AC02-76SF00515; EP/L000237/1; SC0016253; 695088
Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1369454
Alternate Identifier(s):
OSTI ID: 1358530