Berlin 2014 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 34: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 34.31: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Development of a high power semiconductor based laser source at 493nm for optical trapping of Ba+ ions. — •Tobias Schnetzer, Artjom Krükow, Arne Härter, Amir Mohammadi, Joschka Wolf, and Johannes Hecker Denschlag — Institute for Quantummater, Ulm, Germany

One of the most commonly used tools to trap ions to date are Paul traps. Due to their operating principle trapped particles will undergo a driven micromotion which cannot be cooled. Using optical dipole forces to create a confining potential this micromotion can be circumvented therefore reducing the lower limit of attainable kinetic energies of the trapped ion. In our atom-ion hybrid apparatus we require a common optical trap to confine a single Ba+ together with an ultracold Rb atom cloud at the same time. In this poster we present a home-built semiconductor based laser providing a narrowband multi watt output of near resonant light for the Ba+ ion at 493nm. We discuss our approach to realize a common atom-ion trap where this laser source is key and show our progress.