Oliver Schepp
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View article: Electronic decay of core-excited HCl molecules probed by THz streaking
Electronic decay of core-excited HCl molecules probed by THz streaking Open
The ultrafast electronic decay of HCl molecules in the time domain after resonant core excitation was measured. Here, a Cl-2p core electron was promoted to the antibonding σ* orbital initiating molecular dissociation, and simultaneously, t…
View article: VUV-induced dynamics of the electronically excited C2D4 molecule in a single-color pump-probe experiment
VUV-induced dynamics of the electronically excited C2D4 molecule in a single-color pump-probe experiment Open
The ultrafast non-adiabatic dynamics of the electronically excited ethylene molecule C2H4 and its deuterated isotopologue C2D4 are studied with time-resolved photoelectron spectroscopy after π→π∗ excitation via irradiation with light in th…
View article: Weak-field few-femtosecond VUV photodissociation dynamics of water isotopologues
Weak-field few-femtosecond VUV photodissociation dynamics of water isotopologues Open
We present a joint experimental and theoretical study of the VUV-induced dynamics of H2O and its deuterated isotopologues in the first excited state (A1B1) utilizing a VUV-pump VUV-probe scheme combined with ab initio classical trajectory …
View article: Single-shot nonlinear spectroscopy in the vacuum-ultraviolet
Single-shot nonlinear spectroscopy in the vacuum-ultraviolet Open
Time-resolved spectroscopy in the vacuum/extreme ultraviolet (VUV/XUV) spectral range promises to disclose ultrafast dynamics in all states of matter. Completing a measurement within a single shot eliminates the influence of experimental p…
View article: Tracing few-femtosecond photodissociation dynamics on molecular oxygen with a single-color pump-probe scheme in the VUV
Tracing few-femtosecond photodissociation dynamics on molecular oxygen with a single-color pump-probe scheme in the VUV Open
Molecular wave-packet dynamics in oxygen are studied in the time domain, using a single-color VUV-pump--VUV-probe scheme. 17-fs VUV pulses, centered at 161 nm are generated via high-order harmonic generation driven by an intense 800-nm pul…
View article: Molecular dynamics observed with nonlinear autocorrelation in the VUV range
Molecular dynamics observed with nonlinear autocorrelation in the VUV range Open
160 nm vacuum-ultraviolet pulses generated as the 5th harmonic of an 800 nm femtosecond laser are sufficiently energetic to drive multiphoton transitions in molecules. 2nd order intensity- as well as interferometric autocorrelation were us…