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MO: Fachverband Molekülphysik

MO 6: Poster: Cold Molecules

MO 6.9: Poster

Montag, 14. März 2011, 16:00–18:00, P1

High resolution spectroscopy of Rb₂ triplet molecules, experimental techniques and effective Hamiltonians — •Christoph Strauss^1,2, Tetsu Takekoshi², Florian Lang², Klaus Winkler², Rudolf Grimm^2,3, Marius Lysebo⁴, Leif Veseth⁴, Eberhard Tiemann⁵, and Johannes Hecker Denschlag¹ — ¹Universität Ulm, Institut für Quantenmaterie, Albert-Einstein-Allee 45, D-89081 Ulm, Germany — ²Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, A-6020 Innsbruck, Austria — ³Institut für Quantenoptik und Quanteninformation der Österreichischen Akademie der Wissenschaften, A-6020 Innsbruck, Austria — ⁴Department of Physics, University of Oslo, 0316 Oslo, Norway — ⁵Gottfried Wilhelm Leibniz Universität Hannover, D-30167 Hannover, Germany

In this poster we present details and background information on our spectroscopic analysis of the triplet ground state a³Σ_u⁺ and the first excited triplet state (1)³Σ_g⁺ of Rubidium 87 discussing its vibrational, rotational, hyperfine and Zeeman structure. This includes information that cannot be given in our talk "High resolution spectroscopy of Rb₂ triplet molecules". In brief, we perform laser spectroscopy on ultracold Feshbach molecules to obtain precision data with a typical resolution of a few tens of MHz. With model Hamiltonians we can describe and understand the experimental spectra quite well. As a result we obtain optimized a³Σ_u⁺ and the X¹Σ_g⁺ Born Oppenheimer potentials within a coupled channel model.