Mechanism of Angular Momentum Exchange between Molecules and Laguerre-Gaussian Beams

Journal Article · Fri Jun 23 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.243001· OSTI ID:20775282

Alexandrescu, Adrian ^[1]; Cojoc, Dan ^[2]; Fabrizio, Enzo Di ^[3]

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1. Department of Mathematics, E.T.S.I.I., University of Castilla - La Mancha, 13071 Ciudad Real (Spain)
2. CNR - Istituto Nazionale per la Fisica della Materia, Laboratorio Nazionale TASC, Area Science Park, 34012 Basovizza (TS) (Italy)
3. BIONEM Laboratory, University of Magna Graecia, Campus Germaneto Viale Europa, 88100 Catanzaro (Italy)

We derive the interaction Hamiltonian between a diatomic molecule and a Laguerre-Gaussian beam under the assumption of a small spread of the center of mass wave function of the molecule in comparison with the beam waist. Considering the dynamical variables of the center of mass, vibrational, rotational, and electronic motion, we show that, within the electronic dipole approximation, the orbital angular momentum of the field couples with the rotational and electronic motion. The changes in the transition probabilities and selection rules induced by the field orbital angular momentum and the applicability of the derived interaction mechanisms for polyatomic molecules are discussed.

• OSTI ID: 20775282
• Journal Information: Physical Review Letters, Vol. 96, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.96.243001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
CENTER-OF-MASS SYSTEM
DIPOLES
HAMILTONIANS
MOLECULES
ORBITAL ANGULAR MOMENTUM
PROBABILITY
SELECTION RULES
WAVE FUNCTIONS