Single-laser, one beam, tetrahedral magneto-optical trap

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Abstract

We have realized a 4-beam pyramidal magneto-optical trap ideally suited for future microfabrication. Three mirrors split and steer a single incoming beam into a tripod of reflected beams, allowing trapping in the four-beam overlap volume. We discuss the influence of mirror angle on cooling and trapping, finding optimum efficiency in a tetrahedral configuration. We demonstrate the technique using an ex-vacuo mirror system to illustrate the previously inaccessible supra-plane pyramid MOT configuration. Unlike standard pyramidal MOTs both the pyramid apex and its mirror angle are non-critical and our MOT offers improved molasses free from atomic shadows in the laser beams. The MOT scheme naturally extends to a 2-beam refractive version with high optical access. For quantum gas experiments, the mirror system could also be used for a stable 3D tetrahedral optical lattice.
Original languageEnglish
Pages (from-to)13601-13608
Number of pages8
JournalOptics Express
Volume17
Issue number16
DOIs
Publication statusPublished - 3 Aug 2009

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manned orbital telescopes
traps
mirrors
lasers
pyramids
trapping
tripods
configurations
apexes
laser beams
cooling
gases

Keywords

  • neutral atoms
  • modulation
  • gas

Cite this

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title = "Single-laser, one beam, tetrahedral magneto-optical trap",
abstract = "We have realized a 4-beam pyramidal magneto-optical trap ideally suited for future microfabrication. Three mirrors split and steer a single incoming beam into a tripod of reflected beams, allowing trapping in the four-beam overlap volume. We discuss the influence of mirror angle on cooling and trapping, finding optimum efficiency in a tetrahedral configuration. We demonstrate the technique using an ex-vacuo mirror system to illustrate the previously inaccessible supra-plane pyramid MOT configuration. Unlike standard pyramidal MOTs both the pyramid apex and its mirror angle are non-critical and our MOT offers improved molasses free from atomic shadows in the laser beams. The MOT scheme naturally extends to a 2-beam refractive version with high optical access. For quantum gas experiments, the mirror system could also be used for a stable 3D tetrahedral optical lattice.",
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Single-laser, one beam, tetrahedral magneto-optical trap. / Vangeleyn, Matthieu; Griffin, Paul F.; Riis, Erling; Arnold, Aidan S.

In: Optics Express, Vol. 17, No. 16, 03.08.2009, p. 13601-13608.

Research output: Contribution to journalArticle

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AU - Vangeleyn, Matthieu

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