Autoresonant excitation and control of molecular degrees of freedom in three dimensions

Journal Article · Thu Sep 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.033404· OSTI ID:20718573

Marcus, Gilad; Friedland, Lazar; Zigler, Arie ^[1]

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1. Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904 (Israel)

A classical, three-dimensional analysis of excitation and control of vibrational-rotational degrees of freedom of a polar diatomic molecule by chirped laser field is presented. The control strategy is based on autoresonance (adiabatic nonlinear synchronization) phenomenon, in which the molecule automatically adjusts its state for staying in a persistent resonance with the laser field despite variation of the laser frequency. Thresholds on driving field amplitudes for entering the autoresonant excitation regime by passage through different resonances are calculated. In autoresonance, the molecule can be excited to large energies and approach the dissociation limit by substantially weaker laser fields than with constant-frequency drives.

• OSTI ID: 20718573
• Journal Information: Physical Review. A, Vol. 72, Issue 3; Other Information: DOI: 10.1103/PhysRevA.72.033404; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
CONTROL
DEGREES OF FREEDOM
DISSOCIATION
EXCITATION
LASER RADIATION
MOLECULES
NONLINEAR PROBLEMS
PHOTON-MOLECULE COLLISIONS
RADIATION PRESSURE
RESONANCE
ROTATIONAL STATES
SYNCHRONIZATION
THREE-DIMENSIONAL CALCULATIONS
VARIATIONS
VIBRATIONAL STATES