Deflection of Rotating Symmetric Molecules by Inhomogeneous Fields

TL;DR

This paper investigates how rotating symmetric molecules are deflected by inhomogeneous fields, revealing new scattering singularities and demonstrating control via femtosecond laser pulses to reduce angular dispersion.

Contribution

It introduces a comprehensive analysis of molecular deflection, identifying new singularities and proposing laser-based control methods for symmetric molecules.

Findings

Discovered new singularities in scattering angle distribution.

Showed laser pre-alignment reduces angular dispersion.

Validated results with classical and advanced simulation methods.

Abstract

We consider deflection of rotating symmetric molecules by inhomogeneous optical and static electric fields, compare results with the case of linear molecules, and find new singularities in the distribution of the scattering angle. Scattering of the prolate/oblate molecules is analyzed in detail, and it is shown that the process can be efficiently controlled by means of short and strong femtosecond laser pulses. In particular, the angular dispersion of the deflected molecules may be dramatically reduced by laser-induced molecular pre-alignment. We first study the problem by using a simple classical model, and then find similar results by means of more sophisticated methods, including the formalism of adiabatic invariants and direct numerical simulation of the Euler-Lagrange equations of motion. The suggested control scheme opens new ways for many applications involving molecular focusing, guiding, and trapping by optical and static fields.