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Q: Fachverband Quantenoptik und Photonik
Q 29: Poster I
Q 29.9: Poster
Tuesday, March 3, 2009, 16:30–19:00, VMP 8 Foyer
An optical lattice at the magic wavelength for ytterbium — •Charbel Abou-Jaoudeh, Cristian Bruni, Florian Baumer, and Axel Görlitz — Institut für Experimentalphysik, HHU Düsseldorf, Germany
Neutral ytterbium (Yb) is an interesting candidate for the realization of an optical clock at a wavelength of 578 nm [1] using the 1S0 → 3P0 transition. A promising scheme for the realization of an optical clock with Yb involves trapping of laser-cooled atoms in an optical lattice operating at the so-called "magic" wavelength at 759 nm[2].
In this poster, we report on the development of a compact source of ultracold Yb atoms for an optical lattice clock which uses only diode-based laser systems for the two laser cooling stages at 399 nm and 556 nm as well as for the optical lattice. The light for the optical lattice is generated by a tapered diode laser with an output of more than 500 mW and the lattice will be formed inside a folded standing-wave resonator which allows for the realization of a three-dimensional lattice geometry. We anticipate that this geometry will allow us to trap more than 105 Yb atoms in a lattice with a depth of around 100 µK.
[1] S. Porsev et al., Phys. Rev. A 69, 021403
(2004)
Z. Barber et al., Phys. Rev. Lett. 96,
083002 (2006)