Influence of the dipole-dipole interaction on velocity-selective coherent population trapping

E. Goldstein, P. Pax, K. J. Schernthanner, B. Taylor, Pierre Meystre

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We analyze the influence of the dipole-dipole interaction between ground and excited state atoms on atomic cooling by velocity-selective coherent population trapping. We consider two three-level atoms in the λ-configuration, interacting with two counterpropagating laser fields as well as with the electromagnetic vacuum modes. The elimination of these modes in the Born-Markov approximation results in spontaneous decay, which is essential in providing the momentum diffusion necessary for cooling, as well as a two-body dipole-dipole interaction between ground-and excited-state atoms. The corresponding two-body master equation is solved numerically by Monte-Carlo wave-function simulations. Our main result is that although a dark state survives the inclusion of dipole-dipole interactions, the presence of this interaction can significantly slow down the cooling process for sufficiently high atomic densities.

Original languageEnglish (US)
Pages (from-to)161-167
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume60
Issue number2-3
DOIs
StatePublished - Feb 1995

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trapping
dipoles
interactions
cooling
atoms
ground state
excitation
elimination
wave functions
inclusions
electromagnetism
momentum
vacuum
decay
configurations
approximation
lasers
simulation

Keywords

  • 42.50.Vk

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Influence of the dipole-dipole interaction on velocity-selective coherent population trapping. / Goldstein, E.; Pax, P.; Schernthanner, K. J.; Taylor, B.; Meystre, Pierre.

In: Applied Physics B: Lasers and Optics, Vol. 60, No. 2-3, 02.1995, p. 161-167.

Research output: Contribution to journalArticle

Goldstein, E. ; Pax, P. ; Schernthanner, K. J. ; Taylor, B. ; Meystre, Pierre. / Influence of the dipole-dipole interaction on velocity-selective coherent population trapping. In: Applied Physics B: Lasers and Optics. 1995 ; Vol. 60, No. 2-3. pp. 161-167.
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