Backward Raman amplification in the Langmuir wavebreaking regime

Abstract

In plasma-based backward Raman amplifiers, the output pulse intensity increases with the input pump pulse intensity, as long as the Langmuir wave mediating energy transfer from the pump to the seed pulse remains intact. However, at high pump intensity, the Langmuir wave breaks, at which point the amplification efficiency may no longer increase with the pump intensity. Numerical simulations presented here, employing a 1D Vlasov-Maxwell code, show that, although the amplification efficiency remains high when the pump only mildly exceeds the wavebreaking threshold, the efficiency drops precipitously at larger pump intensities.

References in corpus (2)

• Saturation of the leading spike growth in backward Raman amplifiers
• Threshold for Electron Trapping Nonlinearity in Langmuir Waves

Cited by in corpus (12)

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• Short-Pulse Amplification by Strongly-Coupled Stimulated Brillouin Scattering
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• X-Ray Amplification by Stimulated Brillouin Scattering
• Beyond nonlinear saturation of backward Raman amplifiers
• Extended propagation of powerful laser pulses in focusing Kerr media
• Raman amplification in the coherent wavebreaking regime
• Backward Raman Amplification in the Long-wavelength Infrared
• Multi-frequency Raman amplifiers
• Enhanced strong-coupling stimulated Brillouin amplification assisted by Raman amplification
• Plasma Physics in Strong Field Regimes