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Applied Physics B

, Volume 73, Issue 2, pp 99–104 | Cite as

Optical pumping and modulation techniques with a molecular Ramsey–Bordé interferometer

  • Ch. Lisdat
  • M. Frank
  • H. Knöckel
  • E. Tiemann

Abstract.

Using the example of a matter-wave interferometer with K2 molecules, we present different methods to simplify the observed interference structures within a hyperfine pattern for improving phase measurements of the interference structure. We consider optical pumping for depletion of specific components to simplify the observed spectra. In connection with a lock-in amplifier, amplitude modulation as well as frequency modulation of laser beams in the interferometer are investigated for better detection of the interference pattern. As a follow-up treatment, digital filtering is demonstrated.

PACS: 03.75.Dg; 42.50.Vk; 42.65.Fi 

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Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • Ch. Lisdat
    • 1
  • M. Frank
    • 1
  • H. Knöckel
    • 1
  • E. Tiemann
    • 1
  1. 1.Institut für Quantenoptik, Universität Hannover, Welfengarten 1, 30167 Hannover, GermanyDE

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