Opt Lett 2012 Nov;37(22):4618-20
University of Bordeaux, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre national de recherche scientifique (CNRS), Centre Lasers Intenses et Applications (CELIA), Unité mixte de recherche (UMR) 5107, Talence F-33400, France.
Opt Lett 2009 May;34(9):1489-91
Université de Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications (CELIA), 351 cours de la Libération F-33405 Talence, France.
We report the first experimental demonstration (to our knowledge) of high-order harmonic generation in rare gases driven by a state-of-the-art high-power Yb-doped-fiber chirped-pulse amplification system. The fiber laser delivers 270 fs pulses in the 30-100 microJ energy range at repetition rates varying from 100 kHz to 1 MHz. A proper focalization allows reaching several 10(13) W/cm2 in a gas jet. Read More
Opt Lett 2011 Sep;36(17):3428-30
Max-Planck-Institut für Quantenoptik,Garching, Germany.
We report on single-pass high-harmonic generation (HHG) with amplified driving laser pulses at a repetition rate of 20.8 MHz. An Yb:YAG Innoslab amplifier system provides 35 fs pulses with 20 W average power at 1030 nm after external pulse compression. Read More
Rev Sci Instrum 2013 Jul;84(7):073103
Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden.
We develop and implement an experimental strategy for the generation of high-energy high-order harmonics (HHG) in gases for studies of nonlinear processes in the soft x-ray region. We generate high-order harmonics by focusing a high energy Ti:Sapphire laser into a gas cell filled with argon or neon. The energy per pulse is optimized by an automated control of the multiple parameters that influence the generation process. Read More
Opt Express 2015 Dec;23(26):33947-55
We study two-color high-order harmonic generation in Neon with 790 nm and 1300 nm driving laser fields and observe an extreme-ultraviolet continuum that extends to photon energies of 160 eV. Using a 6-mm-long, high pressure gas cell, we optimize the HHG yield at high photon energies and investigate the effect of ionization and propagation under phase-matching conditions that allow us to control the temporal structure of the XUV emission. Numerical simulations that include the 3D propagation of the two-color laser pulse show that a bright isolated attosecond pulse with exceptionally high photon energies can be generated in our experimental conditions due to an efficient hybrid optical and phase-matching gating mechanism. Read More