Kinetic simulations of laser parametric amplification in magnetized plasmas
- Princeton Univ., Princeton, NJ (United States)
- Princeton Univ., Princeton, NJ (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- 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
Laser-plasma interactions in magnetized environment
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journal | May 2018 |
Amplification of mid-infrared lasers via backscattering in magnetized plasmas
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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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