Conveners
Chirality 2
- Sascha Schäfer (Universität Oldenburg)
Alec Owens
(CFEL, Universität Hamburg, The Hamburg Centre for Ultrafast Imaging)
15/02/2018, 11:10
Invited talk
Talk
Chirality is conventionally associated with a chemical or optical property of a molecule being in either of its two enantiomeric (mirror-image) forms. In a more general sense, chirality is determined by the time and space inversion (PT) symmetry of the system. Chiral molecules are ‘born’ to be so, owing to their quasi-rigid spatially enantiomorphic geometrical structures with high potential...
Matthias Wollenhaupt
(Carl von Ossietzky Universität, Oldenburg)
15/02/2018, 11:40
Contributed talk
Talk
Recently, the emergence of vortex structures in the momentum distribution of free electron wave packets from photoionization of atoms with sequences of two time-delayed counterrotating circularly polarized (CRCP) ultrashort laser pulses was predicted [1] and demonstrated experimentally [2]. Electron vortices arise from the superposition of two time-delayed free electron wave packets with...
David Ayuso
(Max-Born-Institut, Berlin)
15/02/2018, 12:00
Contributed talk
Talk
High-harmonic generation is a nonlinear process that converts intense infrared radiation into high-frequency light. It can be understood as a sequence of three steps: tunnel ionization, laser-driven acceleration of the electron in the continuum, and recombination with the core resulting in the emission of harmonic light. Since there is a well-defined relationship between the duration of the...
Alexander Kastner
(University of Kassel)
15/02/2018, 12:20
Contributed talk
Talk
The asymmetry of photoelectron angular distributions (PADs) from randomly oriented enantiomers of chiral molecules in the ionization with circularly polarized light arises in forward/backward direction with respect to the light propagation. This effect is known as Photoelectron Circular Dichroism (PECD) and has so far been investigated using synchrotron radiation [1]. By employing resonance...
Willi Paufler
(Friedrich Schiller Universität Jena)
15/02/2018, 12:40
Contributed talk
Talk
We apply Quantum Trajectory Monte Carlo (QTMC) computations in order to model strong field ionization of atoms by twisted Bessel pulses and calculate photoelectron momentum distributions (PEMD). Since Bessel beams can be considered as an infinite superposition of circularly polarized plane waves with the same helicity, whose wave vectors lie on a cone, we compared the PEMD of such Bessel...
