Hamburg 2009 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 11: Kalte Moleküle 2

MO 11.2: Vortrag

Dienstag, 3. März 2009, 14:15–14:30, VMP 6 HS-G

Electric Cooling of Polar Molecules — •Martin Zeppenfeld, Michael Motsch, Christian Sommer, Pepijn W.H. Pinkse, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany

An experimentally realizable scheme to cool molecules into the sub mK regime is presented. Aspects of the scheme which are considered include cooling rates, trap design and selection of suitable molecular transitions. Basic rate equations show cooling from 1K to below 100mK in 1s and cooling to below 1mK in under 10s. During this time, the molecules are enclosed in an electric trap which can be loaded with molecules from an effusive source/quadrupole guide combination as developed in our group [1]. Depending on the implementation, cooling of both internal and external molecular degrees of freedom is possible as well as an accumulation scheme, increasing the density while keeping temperature constant.

[1] T. Junglen et al., Eur. Phys. J. D 31, 365 (2004)