Angular trapping and rotational dissociation of a diatomic molecule in an optical centrifuge
- 22 February 2001
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 114 (8), 3456-3464
- https://doi.org/10.1063/1.1342225
Abstract
We perform a detailed quantum study of forced molecular rotation in an optical centrifuge, recently proposed by J. Karczmarek [Phys, Rev. Lett. 82, 3420 (1999)]. The approach uses strong nonresonant laser fields with chirped frequency to induce efficient rotational excitation of anisotropic molecules via a sequence of Raman transitions. Quantum calculations firstly of angular confinement (angular trapping) of a molecule in the early stages of the centrifuge evolution and secondly of the resulting rotational dissociation process are carried out herein. The trapping calculations include both angular degrees of freedom while the dissociation calculations include one vibrational and one rotation degree of freedom. Diatomic Cl2 is used as a test case. An extension of the scheme outlined by Karczmarek et al. is proposed as a method of producing molecules in a single selected J=Jz level.Keywords
This publication has 23 references indexed in Scilit:
- Scheme for state-selective formation of highly rotationally excited diatomic moleculesThe Journal of Chemical Physics, 2000
- Subfemtosecond Pulse Generation by Molecular ModulationPhysical Review Letters, 1998
- How Landau-Zener Tunneling Takes TimePhysical Review Letters, 1998
- Deflection of Neutral Molecules using the Nonresonant Dipole ForcePhysical Review Letters, 1997
- Guiding electron orbits with chirped lightOptics Express, 1997
- Nonspreading Wave Packets for Rydberg Electrons in Rotating Molecules with Electric Dipole MomentsPhysical Review Letters, 1996
- Nonstationary, Nondispersive Wave Packets in a Rydberg AtomPhysical Review Letters, 1996
- Nonlinear Dynamics of Chirped Pulse Excitation and Dissociation of Diatomic MoleculesPhysical Review Letters, 1995
- Efficient population transfer in a three-level ladder system by frequency-swept ultrashort laser pulsesPhysical Review Letters, 1992
- Efficient molecular dissociation by a chirped ultrashort infrared laser pulsePhysical Review Letters, 1990