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arXiv · 1504.01885

Quantum Phase Analysis of Field-Free Molecular Alignment

Sang Jae Yun·Chul Min Kim·Jongmin Lee·Chang Hee Nam
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Abstract

We present quantum mechanical explanations for unresolved phenomena observed in field-free molecular alignment by a femtosecond laser pulse. Quantum phase analysis of molecular rotational states reveals the physical origin of the following phenomena: strong alignment peaks appear periodically, and the temporal shape of each alignment peak changes in an orderly fashion depending on molecular species; the strongest alignment is not achieved at the first peak; the transition between aligned and anti-aligned states is very fast compared to the time scale of rotational dynamics. These features are understood in a unified way analogous to that describing a carrier-envelope-phase-stabilized mode-locked laser.

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Sang Jae Yun, Chul Min Kim, Jongmin Lee, Chang Hee Nam. 2015-04-08. Quantum Phase Analysis of Field-Free Molecular Alignment. https://doi.org/10.1103/physreva.86.051401

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