Nonresonant Multiple-Pulse Control of Molecular Motions in Liquid

• Main Author: Nikiforov V.G.
• Format: Article
• Language: English
• Published: EDP Sciences 2015-01-01
• Series: EPJ Web of Conferences
• Subjects: multiple-pulse spectroscopy; coherent control; ultrafast optical Kerr effect
• Online Access: http://dx.doi.org/10.1051/epjconf/201510308002

We propose the implementation of the multiple-pulse excitation for manipulation of the molecular contributions to the optically-heterodyne-detected optical-Kerr-effect. The key parameters controlling the specificity of the multiple-pulse excitation scenarios are the pulses durations, the delays between pulses, the relation between the pump pulses amplitudes and the pulses polarizations. We model the high-order optical responses and consider some principles of the scenarios construction. We show that it is possible to adjust the excitation scenario in such a way that the some responses can be removed from detected signal along with the enhancement of the interested response amplitude. The theoretical analysis and first experimental data reveal that the multiple-pulse excitation technique can be useful for the selective spectroscopy of the molecular vibrations and rotations in liquid.