Hannover 2016 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 11: Poster: Quantum Optics and Photonics I

Q 11.38: Poster

Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof

A modified setup for trapping of neutral mercury — •Holger John and Thomas Walther — Technische Universität Darmstadt, Institut für Angewandte Physik, Schlossgartenstraße 7, 64289 Darmstadt

Laser-cooled mercury constitutes an interesting starting point for various experiments, in particular in light of the existence of bosonic and fermionic isotopes. On the one hand the fermionic isotopes could be used to develop a new time standard based on a optical lattice clock. Another interesting venue is the formation of ultra cold Hg-dimers employing photo-association and achieving vibrational cooling by employing a special scheme. The requirements for trapping neutral mercury are given by the cooling transition at 253.7 nm with a linewidth of 1.27 MHz.

We have developed a non-cryogenic Yb-doped fiber amplified ECDL with the fundamental wavelength of 1014.8 nm. It's twice frequency doubled and stabilizied at a build-up reference resonator.

In addition to the laser-system our vacuum-system has been modified with a new compact Hg-source. We will report on the status of the experiments.