title: Generation of microJ-level multicolored femtosecond laser pulses using cascaded four-wave mixing.
abstract: Multicolor femtosecond pulses were simultaneously obtained by a cascaded FWM process in fused silica glass. The sideband spectra were tunable by changing the crossing angle of the two input beams. Frequency up-shift and down-shift pulses with energies as high as 1 microJ, durations of 45 fs, nearly diffraction limited Gaussian spatial profiles, and power stability smaller than 2% RMS of the generated sidebands were obtained. These multicolor sidebands can be used in various experiments, such as multicolor pump-probe experiment.
authors.affiliation: Department of Applied Physics and Chemistry and Institute for Laser Science, University of Electro-Communications, Chofu, Tokyo, Japan. jliu@ils.uec.ac.jp
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Kobayashi