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Title: Beyond nonlinear saturation of backward Raman amplifiers

Abstract

Backward Raman amplification is limited by relativistic nonlinear dephasing resulting in saturation of the leading spike of the amplified pulse. We employed pump detuning in order to mitigate the relativistic phase mismatch and to overcome the associated saturation. In an amplified pulse can then be reshaped into a monospike pulse with little precursory power ahead of it, with the maximum intensity increasing by a factor of two. Finally, this detuning can be employed advantageously both in regimes where the group velocity dispersion is unimportant and where the dispersion is important but small.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Technion Israel Inst. of Technology, Haifa (Israel)
  3. Inst. of Applied Physics RAS, Nizhnii Novgorod (Russia)
  4. Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1305352
Alternate Identifier(s):
OSTI ID: 1259580
Grant/Contract Number:  
NA0002948; FA9550-15-1-0391; AC02-09CH11466; HDTRA1-11-1-0037; 15-32-20641
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 93; Journal Issue: 6; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; short laser-pulses; amplification; plasma; compression; regime

Citation Formats

Barth, Ido, Toroker, Zeev, Balakin, Alexey A., and Fisch, Nathaniel J. Beyond nonlinear saturation of backward Raman amplifiers. United States: N. p., 2016. Web. https://doi.org/10.1103/PhysRevE.93.063210.
Barth, Ido, Toroker, Zeev, Balakin, Alexey A., & Fisch, Nathaniel J. Beyond nonlinear saturation of backward Raman amplifiers. United States. https://doi.org/10.1103/PhysRevE.93.063210
Barth, Ido, Toroker, Zeev, Balakin, Alexey A., and Fisch, Nathaniel J. Mon . "Beyond nonlinear saturation of backward Raman amplifiers". United States. https://doi.org/10.1103/PhysRevE.93.063210. https://www.osti.gov/servlets/purl/1305352.
@article{osti_1305352,
title = {Beyond nonlinear saturation of backward Raman amplifiers},
author = {Barth, Ido and Toroker, Zeev and Balakin, Alexey A. and Fisch, Nathaniel J.},
abstractNote = {Backward Raman amplification is limited by relativistic nonlinear dephasing resulting in saturation of the leading spike of the amplified pulse. We employed pump detuning in order to mitigate the relativistic phase mismatch and to overcome the associated saturation. In an amplified pulse can then be reshaped into a monospike pulse with little precursory power ahead of it, with the maximum intensity increasing by a factor of two. Finally, this detuning can be employed advantageously both in regimes where the group velocity dispersion is unimportant and where the dispersion is important but small.},
doi = {10.1103/PhysRevE.93.063210},
journal = {Physical Review E},
number = 6,
volume = 93,
place = {United States},
year = {2016},
month = {6}
}

Journal Article:

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Cited by: 5 works
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