Quadrupole absorption rate for atoms in circularly-polarized optical vortices
arXiv:2101.07294 · doi:10.1016/j.rinp.2021.104541
Abstract
Twisted light beams, or optical vortices, have been used to drive the circular motion of microscopic particles in optical tweezers and have been shown to generate vortices in quantum gases. Recent studies have established that electric quadrupole interactions can mediate an orbital angular momentum exchange between twisted light and the electronic degrees of freedom of atoms. Here we consider a quadrupole atomic transition mediated by a circularly-polarized optical vortex. We evaluate the transfer rate of the optical angular momentum to a ion involving the quadrupole transition and explain how the polarization state and the topological charge of the vortex beam determine the selection rules.
13 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:2007.04021
References in corpus (7)
- Absolute frequency measurement of the 40Ca+ S1/2 - D5/2 clock transition
- Multipole (E1, M1, E2, M2, E3, M3) transition wavelengths and rates between 3l5l' excited and ground states in nickel-like ions
- Mapping of focused Laguerre-Gauss beams: The interplay between spin and orbital angular momentum and its dependence on detector characteristics
- Electric Quadrupole Moments of Metastable States of Ca+, Sr+, and Ba+
- Quadrupole absorption rate and orbital angular momentum transfer for atoms in optical vortices
- Electrons in intense laser fields with local phase, polarization, and skyrmionic textures
- Spin selection rule for {\it S} level transitions in atomic rubidium under paraxial and nonparaxial two-photon excitation