Berlin 2014 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 20: Ultra-cold plasmas and Rydberg systems III (with Q)
A 20.4: Vortrag
Dienstag, 18. März 2014, 14:45–15:00, BEBEL E44/46
Investigation of d-state Rydberg molecules — •Alexander Krupp1, Anita Gaj1, Jonathan Balewski1, Philipp Ilzhöfer1, Markus Kurz2, Sebastian Hofferberth1, Robert Löw1, Tilman Pfau1, and Peter Schmelcher2 — 15. Physikalisches Institut, Universität Stuttgart, Germany — 2Zentrum für Optische Quantentechnologien, Universität Hamburg, Germany
Rydberg electrons can trap ground state atoms giving rise to the creation of large Rydberg molecules with internuclear distances of several thousands of Bohr radii. Spectroscopic studies already proved the existence of these exotic molecules for Rubidium Rydberg s-states[1].
Recently we studied mj-dependent d-states where the molecular potential shows a different angular dependency. We prove the existence of these molecules for two different mj states for principal quantum numbers n from 40-50. By changing the polarization and detuning of our excitation laser we are able to selectively excite specific rovibrational states and thereby generate a specific alignment of these d-state molecules. A full theory, using the Born-Oppenheimer approximation and taking s- and p-wave scattering into account, reproduces our spectroscopy data very well.
[1] V. Bendkowsky et al., Nature 458, 0028–0836 (2009)