Phys. Rev. Lett. 101, 133004 (2008) [4 pages]

Formation of Ultracold Polar Molecules in the Rovibrational Ground State

Abstract

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J. Deiglmayr, A. Grochola^*, M. Repp, K. Mörtlbauer, C. Glück, J. Lange, O. Dulieu^†, R. Wester, and M. Weidemüller^‡
Albert-Ludwigs-Universität Freiburg, Physikalisches Institut, Hermann-Herder-Str. 3, 79104 Freiburg, Germany

Received 20 July 2008; published 25 September 2008

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Ultracold LiCs molecules in the absolute ground state X¹Σ⁺, v^′′=0, J^′′=0 are formed via a single photoassociation step starting from laser-cooled atoms. The selective production of v^′′=0, J^′′=2 molecules with a 50-fold higher rate is also demonstrated. The rotational and vibrational state of the ground state molecules is determined in a setup combining depletion spectroscopy with resonant-enhanced multiphoton ionization time-of-flight spectroscopy. Using the determined production rate of up to 5×10³ molecules/s, we describe a simple scheme which can provide large samples of externally and internally cold dipolar molecules.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.101.133004

DOI:

10.1103/PhysRevLett.101.133004

PACS:

37.10.Mn, 33.20.−t, 33.80.Rv

^*Also at the Institute of Experimental Physics, Warsaw University, Poland

^†Permanent address: Laboratoire Aimé Cotton, CNRS, Université Paris Sud XI, Orsay, France

^‡weidemueller@physik.uni-freiburg.de

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Phys. Rev. Lett. 101, 133004 (2008) [4 pages]

Formation of Ultracold Polar Molecules in the Rovibrational Ground State

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