Cold collisions in a high-gradient magneto-optical trap

B Ueberholz, S Kuhr, D Frese, V Gomer, D Meschede

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We present a detailed analysis of the cold collision measurements performed in a high-gradient magneto-optical trap with a few trapped Cs atoms first presented in Ueberholz et al (J. Phys. B: At. Mol. Opt. Phys. 33 (2000) L135). The ability to observe individual loss events allows us to identify two-body collisions that lead to the escape of only one of the colliding atoms (up to 10% of all collisional losses). Possible origins of these events are discussed here. We also observed strong modifications of the total loss rate with variations in the repumping laser intensity. This is explained by a simple semiclassical model based on optical suppression of hyperfine-changing collisions between ground-state atoms.

LanguageEnglish
Pages4899-4914
Number of pages16
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume35
Issue number23
DOIs
Publication statusPublished - 14 Dec 2002

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traps
gradients
collisions
atoms
escape
retarding
ground state
lasers

Keywords

  • cold collisions
  • high-gradient
  • magneto-optical trap
  • trapped Cs atoms
  • hyperfine-changing collisions

Cite this

Ueberholz, B ; Kuhr, S ; Frese, D ; Gomer, V ; Meschede, D . / Cold collisions in a high-gradient magneto-optical trap. In: Journal of Physics B: Atomic, Molecular and Optical Physics. 2002 ; Vol. 35, No. 23. pp. 4899-4914.
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Cold collisions in a high-gradient magneto-optical trap. / Ueberholz, B ; Kuhr, S ; Frese, D ; Gomer, V ; Meschede, D .

In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 35, No. 23, 14.12.2002, p. 4899-4914.

Research output: Contribution to journalArticle

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KW - magneto-optical trap

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