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Title: Kinetic simulations of laser parametric amplification in magnetized plasmas

Abstract

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.

Authors:
 [1]; ORCiD logo [2];  [3]; ORCiD logo [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)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
FA9550-15-1-0391; EP/G054950/1; EP/G055165/1; EP/G056803/1; EP/M022463/1
OSTI Identifier:
1557563
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 9; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Jia, Qing, Shi, Yuan, Qin, Hong, and Fisch, Nathaniel J. Kinetic simulations of laser parametric amplification in magnetized plasmas. United States: N. p., 2017. Web. doi:10.1063/1.4998168.
Jia, Qing, Shi, Yuan, Qin, Hong, & Fisch, Nathaniel J. Kinetic simulations of laser parametric amplification in magnetized plasmas. United States. https://doi.org/10.1063/1.4998168
Jia, Qing, Shi, Yuan, Qin, Hong, and Fisch, Nathaniel J. Thu . "Kinetic simulations of laser parametric amplification in magnetized plasmas". United States. https://doi.org/10.1063/1.4998168. https://www.osti.gov/servlets/purl/1557563.
@article{osti_1557563,
title = {Kinetic simulations of laser parametric amplification in magnetized plasmas},
author = {Jia, Qing and Shi, Yuan and Qin, Hong and Fisch, Nathaniel J.},
abstractNote = {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.},
doi = {10.1063/1.4998168},
journal = {Physics of Plasmas},
number = 9,
volume = 24,
place = {United States},
year = {Thu Aug 10 00:00:00 EDT 2017},
month = {Thu Aug 10 00:00:00 EDT 2017}
}

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Cited by: 12 works
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Works referencing / citing this record:

Laser-plasma interactions in magnetized environment
journal, May 2018

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Amplification of mid-infrared lasers via backscattering in magnetized plasmas
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Laser Amplification in Strongly-Magnetized Plasma
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