Now showing items 1-20 of 20

  • 2-μm wavelength, high-energy Ho:YLF chirped-pulse amplifier for mid-infrared OPCPA 

    Hemmer, M.; Sánchez, D.; Jelínek, M.; Smirnov, Vadim; Jelinkova, H.; Kubeček, V.; Biegert, Jens (OSA, 2015-02-02)
    Article
    Open Access
    A 2-μm wavelength laser delivering up to 39-mJ energy, ∼10 ps duration pulses at 100-Hz repetition rate is reported. The system relies on chirped pulse amplification (CPA): a modelocked Er:Tm:Ho fiber-seeder is followed ...
  • Attosecond pulse shaping using partial phase matching 

    Austin, Dane R.; Biegert, Jens (IOP, 2014-11-04)
    Article
    Open Access
  • 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
    Open Access
    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
    Open Access
    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% ...
  • 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
    Open Access
    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
    Restricted access - publisher's policy
    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 ...
  • Imaging an aligned polyatomic molecule with laser-induced electron diffraction 

    Pullen, Michael G.; Wolter, Benjamin; Le, Anh-Thu; Baudisch, Matthias; Hemmer, Michaël; Senftleben, Arne; Schröter, Claus Dieter; Ullrich, Joachim; Moshammer, Robert; Lin, C. D.; Biegert, Jens (Nature Publishing Group, 2015-06-24)
    Article
    Open Access
    Laser-induced electron diffraction is an evolving tabletop method that aims to image ultrafast structural changes in gas-phase polyatomic molecules with sub-Ångstro¨m spatial and femtosecond temporal resolutions. Here ...
  • 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
    Open Access
    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. ...
  • Molecular Fine Structure from Water Window X-rays 

    Cousin, Seth L.; Silva, Francisco; Teichmann, Stephan; Hemmer, M.; Biegert, Jens (OSA, 2014-12-01)
    Article
    Open Access
  • 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
    Open Access
    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 ...
  • Spatiotemporal isolation of attosecond soft X-ray pulses in the water window 

    Silva, Francisco; Teichmann, Stephan M.; Cousin, Seth L.; Hemmer, Michael; Biegert, Jens (Nature Publishing group, 2015-03-19)
    Article
    Open Access
    Attosecond pulses at photon energies that cover the principal absorption edges of the building blocks of materials are a prerequisite for time-resolved probing of the triggering events leading to electronic dynamics such ...
  • Strong-Field Physics with Mid-IR Fields 

    Wolter, Benjamin; Pullen, Michael G.; Baudisch, Matthias; Sclafani, Michele; Hemmer, Michaël; Senftleben, Arne; Schröter, Claus Dieter; Ullrich, Joachim; Moshammer, Robert; Biegert, Jens (APS, 2015-06-26)
    Article
    Open Access
    Strong-field physics is currently experiencing a shift towards the use of mid-IR driving wavelengths. This is because they permit conducting experiments unambiguously in the quasistatic regime and enable exploiting the ...
  • Strong-field plasmonic photoemission in the mid-IR at <1 GW/cm2 intensity 

    Teichmann, S. M.; Rácz, P.; Ciappina, M. F.; Pérez-Hernández, J. A.; Thai, A.; Fekete, J.; Elezzabi, A. Y.; Veisz, L.; Biegert, Jens; Dombi, P. (Nature Publishing group, 2015-01-12)
    Article
    Open Access
    We investigated nonlinear photoemission from plasmonic films with femtosecond, mid-infrared pulses at 3.1 mm wavelength. Transition between regimes of multi-photon-induced and tunneling emission is demonstrated at an ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • Symphony on strong field approximation 

    Amini, Kasra; Biegert, Jens; Calegari, Francesca; Chacón, Alexis; Ciappina, Marcelo F.; Dauphin, Alexandre; Efimov, Dmitry K.; Faria, Carla Figueira de Morisson; Giergiel, Krzysztof; Gniewek, Piotr; Landsman, Alexandra S.; Lesiuk, Michał; Mandrysz, Michał; Maxwell, Andrew S.; Moszynski, Robert; Ortmann, Lisa; Pérez-Hernández, Jose Antonio; Picón, Antonio; Pisanty, Emilio; Prauzner-Bechcicki, Jakub; Sacha, Krzysztof; Suárez, Noslen; Zaïr, Amelle; Zakrzewski, Jakub; Lewenstein, Maciej (IOP, 2019-10-14)
    Article
    Restricted access - publisher's policy
    This paper has been prepared by the Symphony collaboration (University of Warsaw, Uniwersytet Jagielloński, DESY/CNR and ICFO) on the occasion of the 25th anniversary of the ‘simple man’s models’ which underlie most of ...
  • Three-wave mixing mediated femtosecond pulse compression in BBO 

    Grün, A.; Austin, Dane R.; Cousin, Seth L.; Biegert, Jens (OSA, 2015-10-15)
    Article
    Open Access
    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 ...
  • 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, Jens (Science, 2016-10-16)
    Article
    Open Access
    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 ...
  • Ultrafast nonlinear optical response of Dirac fermions in graphene 

    Baudisch, Matthias; Marini, Andrea; Cox, Joel D.; Zhu, Tony; Silva, Francisco; Teichmann, Stephan; Massicotte, Mathieu; Koppens, Frank; Levitov, Leonid S.; García de Abajo, F. Javier; Biegert, Jens (Nature, 2018-03-09)
    Article
    Open Access
    The speed of solid-state electronic devices, determined by the temporal dynamics of charge carriers, could potentially reach unprecedented petahertz frequencies through direct manipulation by optical fields, consisting ...
  • Ultrashort pulse generation in the mid-IR 

    Pires, H.; Baudisch, M.; Sanchez, D.; Hemmer, M.; Biegert, Jens (Elsevier, 2015-09-01)
    Article
    Open Access
    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 ...
  • Ultrashort pulse generation in the mid-IR 

    Pires, H.; Baudisch, H.; Sanchez, D.; Hemmer, M.; Biegert, Jens (Science Direct, 2015-09-01)
    Article
    Restricted access - publisher's policy
    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 ...