Applied physics

, Volume 21, Issue 2, pp 121–126 | Cite as

Dual-frequency optical pumping for spin-polarizing a lithium atomic beam

  • G. Baum
  • C. D. Caldwell
  • W. Schröder
Contributed Papers


A lithium-6 atomic beam is spin-polarized by means of optical pumping with a single-mode dye laser operating on the resonance transition. Simultaneous pumping of both hyperfine substates is achieved by frequency-splitting the laser light with an acousto-optic modulator. A polarization dependent signal, obtained by probing the optical activity of the beam with linearly polarized light, is utilized in a microprocessor-controlled laser stabilization scheme. The polarization is analyzed with a sextupole magnet and its overall value is 0.70 for an intensity of 1×1014 atms s−1. By reversing the sense of circular polarization of the pumping light the atomic beam polarization is easily reversed in direction.


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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • G. Baum
    • 1
  • C. D. Caldwell
    • 1
  • W. Schröder
    • 1
  1. 1.Fakultät für Physik, UniversitätBielefeldFed. Rep. Germany

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