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Applied Physics B

, Volume 106, Issue 2, pp 405–408 | Cite as

Doppler-free frequency-modulation spectroscopy of atomic erbium in a hollow-cathode discharge cell

  • H. BrammerEmail author
  • J. Ulitzsch
  • R. Bourouis
  • M. Weitz
Article

Abstract

The erbium atomic system is a promising candidate for an atomic Bose–Einstein condensate of atoms with a non-vanishing orbital angular momentum (L≠0) of the electronic ground state. In this paper we report on the frequency stabilization of a blue external cavity diode laser system on the 400.91 nm laser cooling transition of atomic erbium. Doppler-free saturation spectroscopy is applied within a hollow-cathode discharge tube to the corresponding electronic transition of several of the erbium isotopes. Using the technique of frequency-modulation spectroscopy, a zero-crossing error signal is produced to lock the diode laser frequency on the atomic erbium resonance. The latter is taken as a reference laser to which a second main laser system, used for laser cooling of atomic erbium, is frequency stabilized.

Keywords

Erbium Probe Beam Laser Cool Reference Laser Saturation Spectroscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • H. Brammer
    • 1
    Email author
  • J. Ulitzsch
    • 1
  • R. Bourouis
    • 1
  • M. Weitz
    • 1
  1. 1.Institut für Angewandte PhysikUniversität BonnBonnGermany

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