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Applied Physics B

, Volume 50, Issue 1, pp 13–17 | Cite as

Laser cooling of trapped Yb+

  • H. A. Klein
  • A. S. Bell
  • G. P. Barwood
  • P. Gill
Contributed Papers

Abstract

172Yb+ ions in an rf trap have been laser cooled for the first time by driving the 2S1/22P1/2 transition at 369.5 nm. It was necessary to irradiate the ions with 2.438 μm infra-red radiation to depopulate the metastable 2D3/2 state. An upper limit on ion energies was determined by observing the size of the trapped cloud and corresponds to a temperature below 2 K. Cooled ion lineshapes were compared with simulations and coherence nulls were observed in the infra-red frequency scans.

PACS

32.80P 

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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • H. A. Klein
    • 1
  • A. S. Bell
    • 1
  • G. P. Barwood
    • 1
  • P. Gill
    • 1
  1. 1.Division of Mechanical and Optical MetrologyNational Physical LaboratoryTeddingtonUK

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