Enhanced Molecular Orientation Induced by Molecular Anti-Alignment

Details Enhanced Molecular Orientation Induced by Molecular Anti-Alignment Enhanced Molecular Orientation Induced by Molecular Anti-Alignment

2006-06-26

arxiv.org/abs/physics/0606230v1

Physics

Optics

Scientific paper

10.1103/PhysRevA.74.053414

We explore the role of laser induced anti-alignment in enhancing molecular orientation. A field-free enhanced orientation via anti-alignment scheme is presented, which combines a linearly polarized femtosecond laser pulse with a half-cycle pulse. The laser pulse induces transient anti-alignment in the plane orthogonal to the field polarization, while the half-cycle pulse leads to the orientation. We identify two qualitatively different enhancement mechanisms depending on the pulse order, and optimize their effects using classical and quantum models both at zero and non-zero temperature.

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