Patrick Rupprecht
Max Planck Society
Polarization (waves)ResonanceCouplingAbsorption spectroscopyOpticsPhysicsChirpInelastic scatteringIonExtreme ultravioletElectronPhotonChemical physicsInterferometryPulse durationRaman scatteringDipoleBound stateUltrashort pulseAutoionizationExcited stateAtomic physicsMaterials scienceAtomic electron transitionIonizationIonic bondingFree-electron laserPhoton energySoft X-ray transientCharacterization (materials science)Photon countingElectron dynamicsElectron interactionStrong couplingUltrashort laserSpectroscopyMoleculeMolecular physicsOptoelectronicsStark effectSulfurLaserNeonPhotodissociationElectric fieldDynamics (mechanics)Rotational–vibrational couplingNonlinear opticsExcitationFree electron modelUltrafast laser spectroscopy
12Publications
3H-index
43Citations
Publications 13
Newest
#1Marc Rebholz (MPG: Max Planck Society)H-Index: 5
#2Thomas Ding (MPG: Max Planck Society)H-Index: 9
Last. Paul Birk (MPG: Max Planck Society)H-Index: 6
view all 0 authors...
In this work, we use an extreme-ultraviolet (XUV) free-electron laser (FEL) to resonantly excite the I: 4d5/2-σ∗ transition of a gas-phase di-iodomethane (CH2I2) target. This site-specific excitation generates a 4d core hole located at an iodine site, which leaves the molecule in a well-defined excited state. We subsequently measure the time-dependent absorption change of the molecule with the FEL probe spectrum centered on the same I: 4d resonance. Using ab initio calculations of absorption spe...
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#1Thomas DingH-Index: 9
#2Marc RebholzH-Index: 5
Last. Thomas PfeiferH-Index: 38
view all 20 authors...
The emergence of ultra-intense extreme-ultraviolet (XUV) and X-ray free-electron lasers (FELs) has opened the door for the experimental realization of non-linear XUV and X-ray spectroscopy techniques. Here we demonstrate an experimental setup for an all-XUV transient absorption spectroscopy method for gas-phase targets at the FEL. The setup combines a high spectral resolving power of E/ΔE ≈ 1500 with sub-femtosecond interferometric resolution, and covers a broad XUV photon-energy range between a...
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#1Thomas Ding (MPG: Max Planck Society)H-Index: 9
#2Marc Rebholz (MPG: Max Planck Society)H-Index: 5
Last. Thomas Pfeifer (MPG: Max Planck Society)H-Index: 38
view all 24 authors...
High-intensity ultrashort pulses at extreme ultraviolet (XUV) and x-ray photon energies, delivered by state-of-the-art free-electron lasers (FELs), are revolutionizing the field of ultrafast spectroscopy. For crossing the next frontiers of research, precise, reliable and practical photonic tools for the spectro-temporal characterization of the pulses are becoming steadily more important. Here, we experimentally demonstrate a technique for the direct measurement of the frequency chirp of extreme-...
6 CitationsSource
#1Markus Ilchen (Stanford University)H-Index: 18
#2Philipp Schmidt (European XFEL)
Last. Philipp V. DemekhinH-Index: 15
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Short-wavelength free-electron lasers with their ultrashort pulses at high intensities have originated new approaches for tracking molecular dynamics from the vista of specific sites. X-ray pump X-ray probe schemes even allow to address individual atomic constituents with a 'trigger'-event that preludes the subsequent molecular dynamics while being able to selectively probe the evolving structure with a time-delayed second X-ray pulse. Here, we use a linearly polarized X-ray photon to trigger th...
1 Citations
#1Lennart Aufleger (MPG: Max Planck Society)H-Index: 3
Last. Thomas PfeiferH-Index: 38
view all 10 authors...
1 CitationsSource
#1Thomas Ding (MPG: Max Planck Society)H-Index: 9
#2Marc Rebholz (MPG: Max Planck Society)H-Index: 5
Last. Thomas Pfeifer (MPG: Max Planck Society)H-Index: 38
view all 23 authors...
We present a technique for the direct measurement of the frequency chirp of high-frequency free-electron-laser pulses based on fundamental nonlinear optics. It is implemented in transient absorption geometry.
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#1Patrick Rupprecht (MPG: Max Planck Society)H-Index: 3
#2Lennart Aufleger (MPG: Max Planck Society)H-Index: 3
Last. Thomas Pfeifer (MPG: Max Planck Society)H-Index: 38
view all 12 authors...
We report on experimental soft-x-ray transient absorption spectroscopy in SF6. The influences of strong SWIR fields and of vibrational dynamics initiated by impulsive stimulated Raman scattering on the 6 a 1 g S 2 p 1 / 2 , 3 / 2 − 1 resonance are investigated.
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#1Alexander MaguniaH-Index: 3
#2Lennart AuflegerH-Index: 3
Last. Thomas PfeiferH-Index: 38
view all 7 authors...
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#1Patrick RupprechtH-Index: 3
#2Lennart AuflegerH-Index: 3
Last. Maurits W. HaverkortH-Index: 40
view all 12 authors...
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