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Applied Physics B

, Volume 64, Issue 4, pp 435–442 | Cite as

Continuous frequency up-conversion in a double-Λ scheme of Na2

  • A. Apolonskii
  • S. Baluschev
  • U. Hinze
  • E. Tiemann
  • B. Wellegehausen
Regular Papers

Abstract.

 In a double-Λ level configuration of Na2 molecules, involving rotational–vibrational levels of the X, A and B bands, continuous resonant frequency mixing ω41−ω23 is demonstrated. A DCM dye laser at 661 nm (λ1) pumps a molecular Raman laser at 746 nm (λ2) in a sodium heatpipe, which is used to generate the molecular vapour. In the same heatpipe, both fields are mixed with the radiation of an argon-ion laser at 514 nm (λ3) to generate up-converted laser radiation at 473 nm (λ4). For laser powers of 200 mW (λ1), 700 mW (λ2, internal power) and 140 mW (λ3), an output power of 120 μW (λ4) has been achieved. Dependences of the generated radiation on the pump fields (powers and detunings) and polarization features are presented; influences of coherent coupling and population transfer mechanisms are discussed.

PACS: 13; 42.50; 42.65 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • A. Apolonskii
    • 1
  • S. Baluschev
    • 1
  • U. Hinze
    • 1
  • E. Tiemann
    • 1
  • B. Wellegehausen
    • 1
  1. 1.Institut für Quantenoptik, Universität Hannover, Welfengarten 1, 30167 Hannover, Germany (Fax:+49-511/762-2211, E-mail: wellegehausen@ mbox.190.uni-hannover.de)DE

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