Light induced charge transfer in molecular complexes containing electron donor and acceptor groups is at the basis of organic photovoltaic devices. To capture the time evolution of this process at the early stages, ideally attosecond time-resolution is required. With the help of elaborate theoretical methods, attosecond pump-probe experiments allow one to image the motion of the “fast”...
The broad energy bandwidth of ultrashort pulses enables building a coherent superposition of elec-tronic states. As a result, the electronic density is out of equilibrium and its localization between nuclei can be controlled on a purely electronic time scale.[1] As the nuclei begin to move, the electronic and nuclear motions are entangled.[2] This entanglement can be usefully exploited for...
The coupled motion of electrons and nuclei is central to understanding fundamental processes in molecules. Here, we investigate the ultrafast photodissociation of bromine (Br$_2$) using a femtosecond pump-probe scheme [1]. In our experiment a weak 400 nm pulse initiates dissociation along the neutral C-state, followed by an 800 nm probe pulse that ionizes the evolving fragments at variable...
