Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Laser and Laser Applications
Q 42.1: Poster
Mittwoch, 16. März 2022, 16:30–18:30, P
All-glass cell for Rydberg physics in hollow-core photonic crystal fibres — •Daniel Rainer Häupl1,2, Daniel Weller3, Robert Löw3, and Nicolas Yann Joly2,1 — 1University of Erlangen-Nürnberg, Staudtstraße 7/B2, 91058 Erlangen, Germany — 2Max Planck Institute for the Science of Light, Staudtstraße 2, 91058 Erlangen, Germany — 35th Physical Institute, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
We present a new type of all-glass vapour cell integrating a hollow-core photonic crystal fibre, which then can be filled with alkali metal vapour. The temperature of the cell itself and its reservoir can be independently adjusted. The small size of this cell permits both a high temperature accuracy and rapid adjustment of the temperature and respectively the atomic density. Additionally, the entire fibre is optically accessible from the side since the cell is all-glass made. In this way, analysis of the properties of the optical system does not only rely on transmission through the fibre but local fluorescence spectroscopy along the whole length of the fibre is possible. This allows us for the very first time to study the real-time diffusion of atoms in and out of the fibre by changing the atomic density of Rubidium atoms inside the vapour cell. Such measurements confirm that the fibre can be rapidly filled with Rubidium atoms. The atomic density reaches an equilibrium only after a few days, compared to months. We believe that such a cell makes an attractive tool for atomic spectroscopy, Rydberg physics and non-linear optics, as well as being much smaller than previous setups.