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Kinetic simulations of laser parametric amplification in magnetized plasmas

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4998168· OSTI ID:1557563
 [1];  [2];  [3];  [2]
  1. Princeton Univ., Princeton, NJ (United States)
  2. Princeton Univ., Princeton, NJ (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. Princeton Univ., Princeton, NJ (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Univ. of Science and Technology of China, Anhui (China)

Laser pulse compression using magnetized resonance near the upper-hybrid frequency is promising for achieving higher output intensity in regimes previously thought impossible using unmagnetized plasmas. Using one dimensional particle-in-cell simulations, we verify that, by partially replacing plasma with an external transverse magnetic field of megagauss scale, the output pulse can be intensified by a factor of a few, due to the increased allowable amplification time despite a decreased growth rate. Further improvement is impeded by the generation of an electromagnetic wakefield, to which the amplified pulse loses more energy than it does in the unmagnetized case. This limitation can however be circumvented by the use of a stronger pump. In contrast to unmagnetized compression, the magnetized amplification remains efficient when the pump intensity is well above the wavebreaking threshold, until a higher phase-mixing threshold is exceeded. Here, this surprising resilience to wavebreaking in magnetized plasma is of great benefit for magnetized compression.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
FA9550-15-1-0391; EP/G054950/1; EP/G055165/1; EP/G056803/1; EP/M022463/1
OSTI ID:
1557563
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 24; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Laser-plasma interactions in magnetized environment journal May 2018
Amplification of mid-infrared lasers via backscattering in magnetized plasmas journal July 2019
Three-wave interactions in magnetized warm-fluid plasmas: General theory with evaluable coupling coefficient journal June 2019
Laser Amplification in Strongly Magnetized Plasma journal July 2019
Laser Amplification in Strongly-Magnetized Plasma text January 2018
Three-wave interactions in magnetized warm-fluid plasmas: general theory with evaluable coupling coefficient text January 2019

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