Quantum Phase Analysis of Field-Free Molecular Alignment

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.

References in corpus (1)

• Fine-tuning molecular energy levels by nonresonant laser pulses

Cited by in corpus (4)

• Manipulation of Molecules with Electromagnetic Fields
• Theoretical Study of Molecular Electronic and Rotational Coherences by High-Harmonic Generation
• Molecular quantum rotors in gyroscopic motion with a nonspreading rotational wavepacket
• Quantum Computation with Rotational States of Nonpolar Ionic Molecules