Backward Raman amplification in a plasma waveguide.
Backward Raman amplification of a short laser pulse in a plasma waveguide is demonstrated. With a guided seed pulse of 0.8-microJ energy and a pump pulse of 345-mJ energy in a 9-mm-long optically preformed plasma waveguide, 910-fold energy amplification is achieved. Heating of the plasma by the long pump pulse is identified to be a key issue for plasma-waveguide-based backward Raman amplifiers.
Pai
C-H
CH
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
Lin
M-W
MW
Ha
L-C
LC
Huang
S-T
ST
Tsou
Y-C
YC
Chu
H-H
HH
Lin
J-Y
JY
Wang
J
J
Chen
S-Y
SY