Berlin 2014 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 32: Poster: Quantum gases, ultracold atoms and molecules

Q 32.26: Poster

Wednesday, March 19, 2014, 16:30–18:30, Spree-Palais

Imaging system for a two-species quantum degenerate gas — •Carmen Renner, Rico Pires, Juris Ulmanis, Stephan Häfner, Alda Arias, Marc Repp, Eva Kuhnle, and Matthias Weidemüller — Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Germany

Taking absorption images of an atomic cloud is a standard method to study ultracold quantum gases. However, to extract accurate information about the cloud’s properties by observing only a small number of atoms, it requires spatial resolution, minimized optical aberrations and appropriate magnification while using a camera with high sensitivity. In our experiment, imaging is even more complicated since we prepare a mixture of ultracold ⁶Li and ¹³³Cs gases, so that resolved imaging for these species requires two different imaging wavelengths, 671 nm and 852 nm respectively, for which the imaging system has to be optimized. This poses the challenge of chromatic aberrations. Initial estimations of those errors were considered with ray tracing. In this poster we will present the setup of our dual-wavelength imaging system that is designed to study collisional properties and dynamics of a quantum degenerate mixture of ¹³³Cs and ⁶Li.