title: Backward Raman amplification in a plasma waveguide.
abstract: 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.
authors.affiliation: Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
authors.forename: C-H
authors.initials: CH
authors.lastname: Pai
authors.forename: M-W
authors.initials: MW
authors.lastname: Lin
authors.forename: L-C
authors.initials: LC
authors.lastname: Ha
authors.forename: S-T
authors.initials: ST
authors.lastname: Huang
authors.forename: Y-C
authors.initials: YC
authors.lastname: Tsou
authors.forename: H-H
authors.initials: HH
authors.lastname: Chu
authors.forename: J-Y
authors.initials: JY
authors.lastname: Lin
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: S-Y
authors.initials: SY
authors.lastname: Chen