Molecular-dynamics study of nonpolar molecular liquids in intense laser fields

Abstract
An electric polarization model for molecular liquids is proposed. This model is applied to liquid carbon disulphide in intense far-infrared laser fields. Changes in the liquid structure, in various time-dependent correlation functions, and in the dielectric properties of the optical medium are investigated. These changes are most profound at frequencies near the rotational resonance. When the perturbation is very strong, the molecular liquid becomes anisotropic and its polarization is saturated.