291 citations · 2k across the 41 of their papers we have counts for
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Electronic State Population Dynamics upon Ultrafast Strong Field Ionization and Fragmentation of Molecular Nitrogen
Carlo Kleine, Marc-Oliver Winghart, Zhuang-Yan Zhang +7
Air-lasing from single ionized N molecules induced by laser filamentation in air has been intensively investigated and the mechanisms responsible for lasing are currently hig…
Attosecond multi-photon multi-electron dynamics
M. Kretschmar, A. Hadjipittas, B. Major +6
Multi-electron dynamics in atoms and molecules very often occur on sub- to few-femtosecond timescales. The available intensities of extreme-ultraviolet (XUV) attosecond pulses have…
Phase-Dependence of Resonant and Antiresonant Two-Photon Excitations
Lorenz Drescher, Tobias Witting, Oleg Kornilov +1
Measurements of the phase of two-photon matrix elements are presented for resonant and antiresonant two-color ionization of helium. A tunable, narrow-bandwidth, near-infrared (NIR)…
Phase cycling of extreme ultraviolet pulse sequences generated in rare gases
Andreas Wituschek, Oleg Kornilov, Tobias Witting +4
The development of schemes for coherent nonlinear time-domain spectroscopy in the extreme-ultraviolet regime (XUV) has so far been impeded by experimental difficulties that arise a…
Attosecond Transient Absorption Spectroscopy without Inversion Symmetry
Lorenz Drescher, Marc J. J. Vrakking, Jochen Mikosch
Transient absorption is a very powerful observable in attosecond experiments on atoms, molecules and solids and is frequently used in experiments employing phase-locked few-cycle i…
Highly nonlinear ionization of atoms induced by intense high-harmonic pulses
Björn Senfftleben, Martin Kretschmar, Andreas Hoffmann +7
Intense extreme-ultraviolet (XUV) pulses enable the investigation of XUV-induced nonlinear processes and are a prerequisite for the development of attosecond pump - attosecond prob…
Retrieving intracycle interference in angular-resolved laser-assisted photoemission from argon
Johan Hummert, Markus Kubin, Sebastián D. López +3
We report on a combined experimental and theoretical study of XUV ionization of atomic argon in the presence of a near-infrared laser field. The resulting energy- and angle- resolv…
Interference stabilization of autoionizing states in molecular studied by time- and angular-resolved photoelectron spectroscopy
Martin Eckstein, Nicola Mayer, Chung-Hsin Yang +4
An autoionizing resonance in molecular N is excited by an ultrashort XUV pulse and probed by a subsequent weak IR pulse, which ionizes the contributing Rydberg states. Time- an…
Imaging Molecular Structure through Femtosecond Photoelectron Diffraction on Aligned and Oriented Gas-Phase Molecules
R. Boll, A. Rouzee, M. Adolph +49
This paper gives an account of our progress towards performing femtosecond time-resolved photoelectron diffraction on gas-phase molecules in a pump-probe setup combining optical la…
X-ray diffraction from isolated and strongly aligned gas-phase molecules with a free-electron laser
Jochen Küpper, Stephan Stern, Lotte Holmegaard +52
We report experimental results on x-ray diffraction of quantum-state-selected and strongly aligned ensembles of the prototypical asymmetric rotor molecule 2,5-diiodobenzonitrile us…
Photoelectron Angular Distributions for Two-photon Ionization of Helium by Ultrashort Extreme Ultraviolet Free Electron Laser Pulses
R. Ma, K. Motomura, K. L. Ishikawa +19
Phase-shift differences and amplitude ratios of the outgoing and continuum wave packets generated by two-photon ionization of helium atoms are determined from the photoelec…
Low-Energy Structures in Strong Field Ionization Revealed by Quantum Orbits
Tian-Min Yan, S. V. Popruzhenko, M. J. J. Vrakking +1
Experiments on atoms in intense laser pulses and the corresponding exact ab initio solutions of the time-dependent Schrödinger equation (TDSE) yield photoelectron spectra with low-…
Attosecond electron spectroscopy using a novel interferometric pump-probe technique
J. Mauritsson, T. Remetter, M. Swoboda +17
We present an interferometric pump-probe technique for the characterization of attosecond electron wave packets (WPs) that uses a free WP as a reference to measure a bound WP. We d…
Field-free molecular alignment probed by the free electron laser in Hamburg (FLASH)
P Johnsson, A Rouzee, W Siu +10
We report experiments on field-free molecular alignment performed at FLASH, the free electron laser (FEL) in Hamburg. The impulsive alignment induced by a 100 fs near-infrared lase…