Enviaments recents

  • Next Generation Driver for Attosecond and Laser-plasma Physics 

    Rivas, D. E.; Borot, A.; Cardenas, D. E.; Marcus, G.; Gu, X.; Herrmann, D.; Xu, J.; Tan, J.; Kormin, D.; Ma, G.; Dallari, W.; Tsakiris, G. D.; Földes, I. B.; Chou, S.-w.; Weidman, M.; Bergues, B.; Wittmann, T.; Schröder, H.; Tzallas, P.; Charalambidis, D.; Razskazovskaya, O.; Pervak, V.; Krausz, F.; Veisz, L. (Nature, 2017-07-12)
    Article
    Accés obert
    The observation and manipulation of electron dynamics in matter call for attosecond light pulses, routinely available from high-order harmonic generation driven by few-femtosecond lasers. However, the energy limitation of ...
  • Ultrafast electron diffraction imaging of bond breaking in di-ionized acetylene 

    Wolter, B.; Pullen, M. G.; Le, A.-T.; Baudisch, M.; Doblhoff-Dier, K.; Senftleben, A.; Hemmer, M.; Schröter, C. D.; Ullrich, J.; Pfeifer, T.; Moshammer, R.; Gräfe, S.; Vendrell, O.; Lin, C. D.; Biegert, J. (Science, 2016-10-16)
    Article
    Accés obert
    Visualizing chemical reactions as they occur requires atomic spatial and femtosecond temporal resolution. Here, we report imaging of the molecular structure of acetylene (C2H2) 9 femtoseconds after ionization. Using ...
  • Ultrashort pulse generation in the mid-IR 

    Pires, H.; Baudisch, M.; Sanchez, D.; Hemmer, M.; Biegert, Jens (Elsevier, 2015-09-01)
    Article
    Accés obert
    Recent developments in laser sources operating in the mid-IR (3–8μm) have been motivated by the numerous possibilities for both fundamental and applied research. One example is the ability to unambiguously detect pollutants ...
  • Three-wave mixing mediated femtosecond pulse compression in BBO 

    Grün, A.; Austin, Dane R.; Cousin, Seth L.; Biegert, Jens (OSA, 2015-10-15)
    Article
    Accés obert
    Nonlinear pulse compression mediated by three-wave mixing is demonstrated for ultrashort Ti:sapphire pulses in a type II phase-matched 𝛽�β-barium borate (BBO) crystal using noncollinear geometry. 170 μJ pulses at 800 nm ...
  • Kinematically complete measurements of strong eld ionisation with mid-IR pulses 

    Pullen, Michael G.; Dura, Judith; Wolter, Benjamin; Baudisch, Matthias; Hemmer, Michael; Camus, Nicolas; Senftleben, Arne; Schroeter, Claus Dieter; Moshammer, Robert; Ullrich, Joachim; Biegert, Jens (IOP, 2014-10-08)
    Article
    Accés obert
    Recent observations of three unique peaks near 1 eV, 100 meV and 1 meV in the electron spectra generated by ionization using intense mid-IR pulses have challenged the current understanding of strong-field (SF) ionization. ...
  • Broadband mid-IR frequency comb with CSP and AGS from a Er,Tm:Ho fiber laser 

    Sánchez, D.; Hemmer, M.; Baudisch, M.; Zawilski, K.; Schunemann, P.; Hoogland, H.; Holzwarth, R.; Biegert, Jens (OSA, 2014-12-15)
    Article
    Accés obert
    We report on the generation of a 2500 nm bandwidth frequency comb at 6.5 μm central wavelength based on critically phase-matched parametric down-conversion in the nonlinear crystal CdSiP 2 CdSiP2 (CSP), driven by a ...
  • High flux table-top soft X-ray source driven by sub-2-cycle, CEP stable, 1.85 μm 1 kHz pulses for carbon K-edge spectroscopy 

    Cousin, S. L.; Silva, F.; Teichmann, S.; Hemmer, M.; Buades, B.; Biegert, Jens (OSA, 2014-09-15)
    Article
    Accés obert
    We report on the first table-top high flux source of coherent soft X-ray radiation up to 400 eV, operating at 1 kHz. This source covers the carbon K-edge with a beam brilliance of (4.3 ± 1.2) × 1015 photons/s/mm2/strad/10% ...
  • Performance of MgO:PPLN, KTA, and KNbO3 for mid-wave infrared broadband parametric amplification at high average power 

    Baudisch, M.; Hemmer, M.; Pires, H.; Biegert, Jens (OSA, 2014-10-15)
    Article
    Accés obert
    The performance of KNbO3, MgO:PPLN and KTA were experimentally compared for broadband mid-wave infrared parametric amplification at high repetition rate. The seed pulses with an energy of 6.5 μJ were amplified using 410 ...
  • High power multi-color OPCPA source with simultaneous femtosecond deep-UV to mid-IR outputs 

    Baudisch, M.; Wolter, B.; Pullen, M.; Hemmer, M.; Biegert, Jens (OSA, 2016-08-01)
    Article
    Accés obert
    Many experimental investigations demand synchronized pulses at various wavelengths, ideally with very short pulse duration and high repetition rate. Here we describe a femtosecond multi-color optical parametric chirped ...
  • High-power sub-two-cycle mid-infrared pulses at 100 MHz repetition rate 

    Pupeza, I.; Sánchez, D.; Zhang, J.; Lilienfein, N.; Seidel, M.; Karpowicz, N.; Paasch-Colberg, T.; Znakovskaya, I.; Pescher, M.; Schweinberger, W.; Pervak, V.; Fill, E.; Pronin, O.; Wei, Z.; Krausz, F.; Apolonski, A.; Biegert, Jens (Nature Publishing Group, 2015-09-21)
    Article
    Accés restringit per política de l'editorial
    Powerful coherent light with a spectrum spanning the mid-infrared (MIR) spectral range is crucial for a number of applications in natural as well as life sciences, but so far has only been available from large-scale ...
  • Ultrashort pulse generation in the mid-IR 

    Pires, H.; Baudisch, H.; Sanchez, D.; Hemmer, M.; Biegert, Jens (Science Direct, 2015-09-01)
    Article
    Accés restringit per política de l'editorial
    Recent developments in laser sources operating in the mid-IR (View the MathML source) have been motivated by the numerous possibilities for both fundamental and applied research. One example is the ability to unambiguously ...
  • Sub-4-optical-cycle, 340 MW peak power, high stability mid-IR source at 160 kHz 

    Baudisch, M.; Pires, H.; Ishizuki, H.; Taira, T.; Hemmer, M.; Biegert, Jens (IOP, 2015-09-03)
    Article
    Accés restringit per política de l'editorial
    We present the state of the art of our development of a unique high average power mid-infrared (IR) optical parametric chirped pulse amplification (OPCPA) source. The system delivers passively carrier-envelope phase ...

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