Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 15: Poster I

A 15.15: Poster

Tuesday, March 3, 2009, 16:30–19:00, VMP 9 Poster

Resonance of Electromagnetically Induced Absorption in Bichromatic Field for Hanle Setup — •Andrey A. Zhukov^1,2, Sergey A. Zibrov³, Vladimir L. Velichansky³, and Valery P. Yakovlev² — ¹Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany — ²Departament of Theoretical Physics, Moscow State Engineering and Physics Institute, 115409 Moscow, Russia — ³P.N. Lebedev Physical Institute RAS, 117924 Moscow, Russia

The analytic description of the electromagnetically inducied absorbtion (EIA) in the Hanle configuration for the atomic transition F_g=1 ↔ F_e=2 is given. It is shown that the absorbtion coefficient depends on the coherence between the marginal ground sublevels. The qualitative explanation of the narrow structure of EIA in weak magnetic field is also discussed. In the case of the backward field acting on the transition F_g=1 ↔ F_e′=1, the EIA resonance strongly depend on a power of the backward field. Due to the effective Λ-scheme increasing of the backward field magnitude leads to increasing of the absorption coefficient.