Phase-dependent interaction in a four-level atomic configuration

Giovanna Morigi, Sonja Franke-Arnold, Gian-Luca Oppo

Research output: Contribution to journalArticle

75 Citations (Scopus)

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.
LanguageEnglish
Article number053409
Number of pages9
JournalPhysical Review A
Volume66
Issue number5
DOIs
Publication statusPublished - 18 Nov 2002

Fingerprint

laser cooling
population inversion
configurations
lasers
alkalies
depletion
diamonds
interactions
interference
cooling
decay
geometry
spectroscopy
atoms

Keywords

  • laser
  • optics
  • physics
  • quantum physics
  • optical devices
  • atoms
  • alkali-earth atoms
  • spectroscopy
  • laser cooling
  • multiphoton interference
  • atomic configuration

Cite this

Morigi, Giovanna ; Franke-Arnold, Sonja ; Oppo, Gian-Luca. / Phase-dependent interaction in a four-level atomic configuration. In: Physical Review A. 2002 ; Vol. 66, No. 5.
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Phase-dependent interaction in a four-level atomic configuration. / Morigi, Giovanna; Franke-Arnold, Sonja; Oppo, Gian-Luca.

In: Physical Review A, Vol. 66, No. 5, 053409, 18.11.2002.

Research output: Contribution to journalArticle

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AU - Morigi, Giovanna

AU - Franke-Arnold, Sonja

AU - Oppo, Gian-Luca

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N2 - 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.

AB - 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.

KW - laser

KW - optics

KW - physics

KW - quantum physics

KW - optical devices

KW - atoms

KW - alkali-earth atoms

KW - spectroscopy

KW - laser cooling

KW - multiphoton interference

KW - atomic configuration

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