Abstract

When molecules are excited by broadband ultrashort pulses, vibrational wavepacket (VWP) will be generated. Observation and manipulation of VWP is one of the key steps for understanding chemical reactions of molecules. So far, the VWPs are mainly prepared in singly charged manifolds because of the lack of short VUV-XUV pulse and their time evolutions are mainly tracked by a few-cycle intense infrared pulses [1, 2]. Even the pulse duration of infrared pulse can be much shorter than vibrational period of molecules, the interaction with intense infrared pulse might lead to the mixing of electronic states and the deformation of molecular geometry. Therefore, the time evolution of VWP should be monitored by one-photon absorption process of light whose pulse duration is much shorter than vibrational period.

© 2014 Japan Society of Applied Physics, Optical Society of America