Rotation and ionization dynamics in intense laser fields

Itakura, Ryuji

We investigate coherent correlation between dynamical alignment and angle-dependent ionization of NO in intense laser fields in the state-resolved manner. When neutral molecules are partly ionized in intense laser fields, a hole in the rotational wave packet of the remaining neutral NO is formed by the ionization, whose rate depends on the alignment angle of the molecular axis with respect to the laser polarization direction. Rotational state distributions of NO are experimentally observed with the spectroscopic technique and then the characteristic feature that the population at higher J levels is increased by the ionization can be identified. Time-dependent Schrodinger equation is numerically solved by taking into account of the influence of ionization.