Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.53: Poster

Donnerstag, 17. März 2011, 16:30–19:30, P1

A compact modular 2D-MOT setup — Bastian Höltkemeier, Christoph Hofmann, Simone Götz, •Hannes Busche, and Matthias Weidemüller — Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg

We present a compact modular source for ultracold rubidium atoms based on the 2D-MOT design first demonstrated in [1]. Aiming for maximal compactness and minimal weight of the setup, a specially designed optics module generates three adjacent cigarshaped cooling regions that allow for two-dimensional atom cooling. By means of two imbalanced counterpropagating pushing beams, a so-called 2D⁺-configuration is realized. Inspired by [2], the optics module also features a set of permanent bar magnets to generate a two-dimensional magnetic quadrupole field. Using positioning pins, the optics module can easily be attached to or removed from the UHV glass cell. This allows external alignment and facilitates the assembly of the 2D-MOT. So far, two modules are implemented in our Rydberg experiment and our transportable MOTRIMS experiment. In general, the design could be adapted to other alkali atoms, except lithium.

[1] K. Dieckmann et al., Phys. Rev. A 58, 3891 (1998)

[2] T. G. Tiecke et al., Phys. Rev. A 80, 013409 (2009)