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Itakura, Ryuji
no journal, ,
Molecular dynamics such as dynamical alignment, structural deformation, and Coulomb explosion are induced by intense laser fields, whose intensity becomes as much as a TW/cm
scale. When the intensity is increased for efficiently control of molecular dynamics, ionization becomes unavoidable. Ionization is not isolated, but strongly correlated with successive processes such as dynamical alignment and electronic excitation inside a molecule. It is a challenge to disentangle the ionization process from other successive dynamical processes, since the ionization is an open quantum system where an electron is released. We present our recent approaches to elucidate how ionization is correlated with dynamical alignment and electronic excitation subsequent to ionization.
Tsubouchi, Masaaki; Momose, Takamasa*
no journal, ,
Pulse shaping has been known as one of the essential technologies for coherent control of atoms and molecules. In particular, it has been recently suggested that the manipulation of molecular rovibrational wave packets in the ground electronic state may realize the coherent control of thermal chemical reactions or the quantum gate operation in quantum information processes. The femtosecond pulse shaping in the mid-infrared region is indispensable for this purpose, and has been developed continuously. In this presentation, we demonstrate the precise arbitrary pulse shaping and its characterization of mid-infrared radiation toward rovibrational wave packet manipulation. We have developed the cross-correlation frequency-resolved optical gating (XFROG) as a simple but convenient pulse characterization method in the mid-infrared region.