Hamburg 2009 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 15: Poster I
A 15.35: Poster
Dienstag, 3. März 2009, 16:30–19:00, VMP 9 Poster
Efficient guiding of cold atoms through a photonic band gap fiber — •Stefan Vorrath1, Sönke Möller1, Kai Bongs2, and Klaus Sengstock1 — 1Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2MUARC, School of Physics and Astronomy, University of Birmingham, Edgebaston, Birmingham B15 2TT, UK
We report on the first demonstration of guiding cold atoms through a photonic band gap fiber. The setup consists of a sample of cold atoms from a MOT which is transferred into a red detuned optical dipole trap laser beam which guides the atoms through a 12μm hole within the photonic fiber.
A very promising environment for further experiments seems to be the nearly perfect 1D optical potential inside the hollow core of the fiber. By measuring the number of atoms transferred through the fiber we have estimated a very high atomic density. This leads to a very high optical depth inside the fiber and can possibly be used for studying nonlinear optical effects in a regime of very low optical power but very strong atom-light interaction.