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Phase-dependent interaction in a four-level atomic configuration

Morigi, Giovanna and Franke-Arnold, Sonja and Oppo, Gian-Luca (2002) Phase-dependent interaction in a four-level atomic configuration. Physical Review A, 66 (5). ISSN 1094-1622

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Abstract

We study a four-level atomic scheme interacting with four lasers in a closed-loop configuration with a ⋄ (diamond) geometry. We investigate the influence of the laser phases on the steady state. We show that, depending on the phases and the decay characteristic, the system can exhibit a variety of behaviors, including population inversion and complete depletion of an atomic state. We explain the phenomena in terms of multiphoton interference, and compare our results with the phase-dependent phenomena in the double-Λ scheme. This investigation may be useful for developing nonlinear optical devices, and for the spectroscopy and laser cooling of alkali-earth atoms.

Item type: Article
ID code: 6169
Keywords: laser, optics, physics, quantum physics, optical devices, atoms, alkali-earth atoms, spectroscopy, laser cooling, multiphoton interference, atomic configuration, Optics. Light, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Depositing user: Miss Darcy Spiller
Date deposited: 21 May 2008
Last modified: 04 Jan 2019 19:19
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URI: https://strathprints.strath.ac.uk/id/eprint/6169
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