We present experimental and theoretical investigations on photoionization of chiral molecules by counter-rotating bicircular bichromatic lasers. Forward/backward asymmetries in the photoelectron momentum distributions reveal the influence of chirality on sub-cycle interferences and angular streaking.
I will illustrate the electron dynamics in 2D, laser-driven topological matter with the help of simple model systems.
We propose and demonstrate experimentally an ultrafast chirality spectroscopy technique based on non-collinear harmonic generation, which relies only on electric-dipole interactions. The scheme is based on symmetry breaking, i.e. the chiral signal resides in harmonics that are forbidden when the medium is achiral/racemic, leading to a background-free signal. Moreover, by controlling the pump’s...
We introduce locally and globally chiral fields and demonstrate the highest possible degree of control over nonlinear chiroptical response, fully suppressing high harmonic emission in a desired enantiomer while enhancing it in its mirror twin.
Our study shows a sub cycle chiral response between a light pulse with zero total chirality, and a chiral molecule. We engineer an electric field whose instantaneous chirality changes sign every half cycle, and observe an instantaneous chiral response. The response can be controlled by changing the temporal behavior of the pulse, on a sub cycle resolution. We show qualitative agreement between...
