Exploració per autor "Biegert, Jens"
Ara es mostren els items 6-25 de 34
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Broadband mid-IR frequency comb with CSP and AGS from a Er,Tm:Ho fiber laser
Sánchez, D.; Hemmer, M.; Baudisch, M.; Zawilski, Kevin T.; Schunemann, P.; Hoogland, H.; Holzwarth, R.; Biegert, Jens (OSA, 2014-12-15)
Article
Accés obertWe 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 ... -
Few-cycle mid-infrared pulses from BaGa2GeSe6
Elu Etxano, Ugaitz; Steinle, Tobias; Biegert, Jens; Maidment, Luke (2020-07-01)
Article
Accés obertBaGa2GeSe6 (BGGSe) is a newly developed nonlinear material that is attractive for ultrabroad frequency mixing and ultrashort pulse generation due to its comparably low dispersion and high damage threshold. A numerical study ... -
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 obertWe 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
Accés obertMany 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'editorialPowerful 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
Accés obertLaser-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 ... -
Imaging an isolated water molecule with an attosecond electron wave packet
Liu, Xinyao; Amini, Kasra; Steinle, Tobias; Sánchez, Aurelien; Moniruzzaman, Shaikh; Belsa Carné, Blanca Maria; Steinmetzer, Johannes; Anh-Thu, Le; Moshammer, Robert; Pfeifer, Thomas; Ullrich, Joachim; Moszynski, Robert; Lin, Chii-Dong; Gräfe, Stefanie; Biegert, Jens (Institute of Physics (IOP), 2020-01-01)
Article
Accés obertWe use laser-induced electron diffraction (LIED) to self-image the molecular structure of an isolated water molecular ion using its own retuning attosecond electron wave packet (EWP). Using LIED’s sub-femtosecond and ... -
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 obertRecent 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. ... -
Laser-induced electron diffraction of the ultrafast umbrella motion in ammonia
Belsa, B.; Amini, K.; Liu, X.; Sánchez, A.; Steinle, T.; Steinmetzer, J.; Le, A. T.; Moshammer, R.; Pfeifer, T.; Ullrich, J.; Moszynski, R.; Lin, C. D.; Grafe, S.; Biegert, Jens (AIP, 2021-01-13)
Article
Accés obertVisualizing molecular transformations in real-time requires a structural retrieval method with Ångström spatial and femtosecond temporal atomic resolution. Imaging of hydrogen-containing molecules additionally requires an ... -
Laser-induced electron diffraction of the ultrafast umbrella motion in ammonia
Belsa Carné, Blanca Maria; Amini, Kasra; Liu, Xinyao; Sánchez, Aurelien; Steinle, Tobias; Steinmetzer, Johannes; Biegert, Jens (AMER INST PHYSICS, 2021-01-13)
Article
Accés obertVisualizing molecular transformations in real-time requires a structural retrieval method with Ångström spatial and femtosecond temporal atomic resolution. Imaging of hydrogen-containing molecules additionally requires an ... -
Molecular Fine Structure from Water Window X-rays
Cousin, Seth L.; Silva, Francisco; Teichmann, Stephan; Hemmer, M.; Biegert, Jens (OSA, 2014-12-01)
Article
Accés obert -
Molecular structure retrieval directly from laboratory-frame photoelectron spectra in laser-induced electron diffraction
Sánchez, Aurelien; Amini, Kasra; Belsa Carné, Blanca Maria; Liu, Xinyao; Steinle, Tobias; Biegert, Jens (2021-03-09)
Article
Accés obertUbiquitous to most molecular scattering methods is the challenge to retrieve bond distance and angle from the scattering signals since this requires convergence of pattern matching algorithms or fitting methods. This ... -
Molecular structure retrieval directly from laboratory-frame photoelectron spectra in laser-induced electron diffraction
Sánchez, A.; Amini, K.; Wang, S.-J.; Steinle, T.; Belsa, B.; Danek, J.; Le, A. T.; Liu, X.; Moshammer, R.; Pfeifer, T.; Richter, M.; Ullrich, J.; Gräfe, S.; Lin, C. D.; Biegert, Jens (Nature Research, 2021-03-09)
Article
Accés obertUbiquitous to most molecular scattering methods is the challenge to retrieve bond distance and angle from the scattering signals since this requires convergence of pattern matching algorithms or fitting methods. This ... -
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 obertThe 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 ... -
Realizing attosecond core-level X-ray spectroscopy for the investigation of condensed matter and for material science
Summers, A.; Severino, Stefano; Reduzzi, Maurizio; Sidiropoulos, Themistoklis P. H.; Rivas, Daniel E.; Palo, Nicola di; Sun, Hung-wei; Chien, Ying-hao; León, Iker; Buades, Barbara; Cousin, S.; Teichmann, Stephan M.; Mey, Tobias; Toomey, Tim; Efetov, Dmitri K.; Biegert, Jens (American Association for the Advancement of Science (AAAS), 2023-01)
Article
Accés obertUnraveling the exact nature of nonequilibrium and correlated interactions is paramount for continued progress in many areas of condensed matter science. Such insight is a prerequisite to develop an engineered approach for ... -
Role of high ponderomotive energy in laser-induced nonsequential double ionization
Shaaran, T.; Camus, N.; Dura, J.; Fechner, L.; Thai, A.; Britz, A.; Baudisch, M.; Steinle, T.; Senftleben, A.; Schröter, C. D.; Ullrich, J.; Pfeifer, T.; Keitel, C. H.; Biegert, Jens; Hatsagortsyan, K. Z.; Moshammer, R. (APS, 2019-02-19)
Article
Accés obertThe laser-induced nonsequential double ionization (NSDI) of rare gas atoms in the near and mid-IR laser fields is studied experimentally and theoretically. We investigate electron-electron correlation at high recollision ... -
Seven-octave high-brightness and carrier-envelope-phase-stable light source
Elu Etxano, Ugaitz; Maidment, Luke; Vamos, Lenard; Badikov, Valeriy; Badikov, Dmitrii; Petrov, Valentin; Biegert, Jens (2021-04)
Article
Accés restringit per política de l'editorialHigh-brightness sources of coherent and few-cycle-duration light waveforms with spectral coverage from the ultraviolet to the terahertz would offer unprecedented versatility and opportunities for a wide range of applications ... -
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
Accés obertAttosecond 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
Accés obertStrong-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
Accés obertWe 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 ...