We strongly condemn Russia's aggressive attack on Ukraine for which there is no rational justification. We stand firmly with the Ukrainian people.
Yuichi Fujimura, Leticia González, Dominik Kröner, Jörn Manz, Imed Mehdaoui, and Burkhard Schmidt
Quantum ignition of intramolecular rotation may be achieved as follows: First, a few-cycle infrared (IR) laser pulse excites the torsional vibration in an oriented molecule. Subsequently, a well timed ultrashort ultraviolet (UV) laser pulse induces a Franck-Condon type transition from the electronic ground state to the excited state with approximate conservation of the intramolecular angular momentum. As a consequence, the torsional motion is converted into a unidirectional intramolecular rotation, with high angular momentum (≈ 100 ħ). The mechanism is demonstrated by means of representative laser driven wave packets which are propagated on ab initio potential energy curves of the model system (4-methyl-cyclohexylidene)fluoromethane.
Chem. Phys. Lett. 386 (4-6), 248-253 (2004)
DOI:10.1016/j.cplett.2004.01.070