Mixed-field orientation of a thermal ensemble of linear polar molecules

Abstract

We present a theoretical study of the impact of an electrostatic field combined with nonresonant linearly polarized laser pulses on the rotational dynamics of a thermal ensemble of linear molecules. We solve the time-dependent Schrödinger equation within the rigid rotor approximation for several rotational states. Using the carbonyl sulfide (OCS) molecule as a prototype, the mixed-field orientation of a thermal sample is analyzed in detail for experimentally accessible static field strengths and laser pulses. We demonstrate that for the characteristic field configuration used in current mixed-field orientation experiments, a significant orientation is obtained for rotational temperatures below 0.7K or using stronger dc fields.

9 pages, 10 figures

References in corpus (7)

• Photoelectron angular distributions from strong-field ionization of oriented molecules
• Laser-induced alignment and orientation of quantum-state-selected large molecules
• Quantum-state selection, alignment, and orientation of large molecules using static electric and laser fields
• Oriented rotational wave-packet dynamics studies via high harmonic generation
• Making the best of mixed-field orientation of polar molecules: A recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses
• Directional States of Symmetric-Top Molecules Produced by Combined Static and Radiative Electric Fields
• Non-adiabatic effects in long-pulse mixed-field orientation of a linear polar molecule