Exploració per autor "Biegert, Jens"
Ara es mostren els items 13-32 de 34
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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 ... -
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'editorialWe 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.; Figueira de Morisson Faria, Carla; 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
Accés obertThis 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
Accés obertNonlinear 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 ... -
Transient Attosecond Soft-X-Ray Spectroscopy in Layered Semi-Metals
Sidiropolous, T. P.H.; Di Palo, N.; Rivas, D. E.; Severino, S.; Reduzzi, M.; Buades, B.; Leon, I.; Cousin, S. L.; Hemmer, M.; Cocchi, C.; Pellegrin, E.; Herrero Martin, J.; Mañas-Valero, S.; Coronado, E.; Danz, T.; Draxi, C.; Uemoto, M.; Yabana, K.; Schultze, Martin; Wall, Simon; Picon, A.; Biegert, Jens (SPIE, 2020)
Comunicació de congrés
Accés obertX-ray absorption fine-structure (XAFS) spectroscopy is a well-established technique capable of extracting information about a material’s electronic and lattice structure with atomic resolution. While the near-edge region ... -
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
Accés obertVisualizing 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 imaging of the Renner-Teller effect in a field-dressed molecule
Amini, Kasra; Sclafani, Michele; Steinle, Tobias; Moniruzzaman, Shaikh; Sánchez, Aurelien; Liu, Xinyao; Anh-Thu, Le; Steinmetzer, Johannes; Pfeiffer, Thomas; Moshammer, Robert; Ullrich, Joachim; Lewenstein, Maciej; Moszynski, Robert; García de Abajo, Francisco Javier; Lin, Chii-Dong; Gräfe, Stefanie; Biegert, Jens (Institute of Physics (IOP), 2020-01-01)
Article
Accés obertWe present experimental results of linear-to-bent transition of field-dressed molecules, mediated by Renner-Teller effect. Using the state-of-the-art laser-induced electron diffraction (LIED) technique, we image a bent and ... -
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 H. L.; Levitov, Leonid S.; García de Abajo, Francisco Javier; Biegert, Jens (Nature, 2018-03-09)
Article
Accés obertThe 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 ...