TY - JOUR
T1 - Plasma Wave Seed for Raman Amplifiers
AU - Qu, Kenan
AU - Barth, Ido
AU - Fisch, Nathaniel J.
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/4/17
Y1 - 2017/4/17
N2 - It is proposed to replace the traditional counterpropagating laser seed in backward Raman amplifiers with a plasma wave seed. In the linear regime, namely, for a constant pump amplitude, a plasma wave seed may be found by construction that strictly produces the same output pulse as does a counterpropagating laser seed. In the nonlinear regime, or pump-depletion regime, the plasma-wave-initiated output pulse can be shown numerically to approach the same self-similar attractor solution for the corresponding laser seed. In addition, chirping the plasma wave wavelength can produce the same beneficial effects as chirping the seed wave frequency. This methodology is attractive because it avoids issues in preparing and synchronizing a frequency-shifted laser seed.
AB - It is proposed to replace the traditional counterpropagating laser seed in backward Raman amplifiers with a plasma wave seed. In the linear regime, namely, for a constant pump amplitude, a plasma wave seed may be found by construction that strictly produces the same output pulse as does a counterpropagating laser seed. In the nonlinear regime, or pump-depletion regime, the plasma-wave-initiated output pulse can be shown numerically to approach the same self-similar attractor solution for the corresponding laser seed. In addition, chirping the plasma wave wavelength can produce the same beneficial effects as chirping the seed wave frequency. This methodology is attractive because it avoids issues in preparing and synchronizing a frequency-shifted laser seed.
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U2 - 10.1103/PhysRevLett.118.164801
DO - 10.1103/PhysRevLett.118.164801
M3 - Article
C2 - 28474915
AN - SCOPUS:85018528984
SN - 0031-9007
VL - 118
JO - Physical review letters
JF - Physical review letters
IS - 16
M1 - 164801
ER -