Nonadiabatic rotational excitation of benzene by nonresonant intense femtosecond laser fields

Nonadiabatic rotational excitation of benzene induced by intense nonresonant femtosecond laser fields (820 nm, up to 2.2 TW/cm2, 700 fs) is studied with a quantum-state resolved manner employing the REMPI technique. The excitation spectra of the S1-S0601 band after the interaction with the intense femtosecond pulse show the drastic change in the rotational-state distribution.