Ultimate field-free molecular alignment by combined adiabatic-impulsive field design

Details Ultimate field-free molecular alignment by combined adiabatic-impulsive field design Ultimate field-free molecular alignment by combined adiabatic-impulsive field design

2008-03-05

arxiv.org/abs/0803.0711v1

Physics

Quantum Physics

5 pages, 4 pages

Scientific paper

10.1103/PhysRevA.77.041404

We show that a laser pulse designed as an adiabatic ramp followed by a kick allows one to reach a perfect postpulse molecular alignment, free of saturation. The mechanism is based on an optimized distribution of the energy between a weakly efficient but non saturating adiabatic ramp and an efficient but saturating impulsive field. Unprecedent degrees of alignment are predicted using state-of-the-art pulse shaping techniques and non-destructive field intensities. The scheme can be extended to reach high degrees of orientation of polar molecules using designed half-cycle pulses.

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