Energy bands and Bloch states in 1D laser cooling and their effects on the velocity distribution

M. Doery, M.T. Widmer, J. Bellanca, E. Vredenbregt, T. Bergeman, H. Metcalf

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21 Citations (Scopus)

Abstract

We describe calculations that predict and analyze distinctive features in the velocity distribution in 1D laser cooling for light shift potential well depths only a few times the recoil energy. These features can be interpreted in terms of populations of energy bands or even Bloch states in the periodic potential. They occur with a σ+ standing wave, with and without a small B field, and for lin⊥lin laser cooling. We have observed these features experimentally in a beam of metastable helium atoms cooled on the 23S1⇆23P2 transition, with velocity resolution ~0.3 recoil.
Original languageEnglish
Pages (from-to)2546-2549
JournalPhysical Review Letters
Volume72
Issue number16
DOIs
Publication statusPublished - 1 Apr 1994
Externally publishedYes

Keywords

  • Optical cooling of atoms
  • trapping
  • Mechanical effects of light on atoms molecules electrons and ions

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