title: High-energy infrared femtosecond pulses generated by dual-chirped optical parametric amplification.
abstract: We demonstrate high-energy infrared femtosecond pulse generation by a dual-chirped optical parametric amplification (DC-OPA) scheme [Opt. Express19, 7190 (2011)]. By employing a 100 mJ pump laser, a signal pulse energy exceeding 20 mJ at a wavelength of 1.4 μm was achieved before dispersion compensation. A total output energy of 33 mJ was recorded. Under a further energy scaling condition, the signal pulse was compressed to an almost transform-limited duration of 27 fs using a fused silica prism compressor. Since the DC-OPA scheme is efficient and energy scalable, design parameters for obtaining 100 mJ level infrared pulses are presented, which are suitable as driver lasers for the energy scaling of high-order harmonic generation with sub-keV photon energy.
authors.forename: Yuxi
authors.initials: Y
authors.lastname: Fu
authors.forename: Eiji J
authors.initials: EJ
authors.lastname: Takahashi
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa
mesh_terms: D000669:Amplifiers, Electronic; D017076:Computer-Aided Design; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D007259:Infrared Rays; D007834:Lasers