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Q: Fachverband Quantenoptik und Photonik

Q 21: Poster I

Q 21.30: Poster

Dienstag, 9. März 2010, 16:00–19:00, Lichthof

Compact electronics for laser system in microgravity — •Thijs Wendrich for the Lasus Team — Institut für Quantenoptik, Leibniz Universität Hannover

Atom interferometers are a symbiosis of matter and photonic waves. A lot of effort needs to be invested in the lasers and the electronic components to achieve the required performance for the manipulation of atoms with light. In the existing framework of the Quantus collaboration, the Lasus project aims to develop robust and miniaturized diode laser systems with spectroscopy and the associated control electronics for use in a compact apparatus for experiments with ultra cold degenerate quantum gases, operating in microgravity environments such as the drop tower in Bremen. In addition, it will prepare us for future space missions. In particular the external cavity diode laser including optical isolator, the spectroscopy and all of the electronics (laser current driver, temperature controller, PID controller, etc.), have to fit in a volume of about 1 liter. However, due to the stringent limits on the volume as well as the mass, all components need to be custom built to achieve the desired compactness with a high degree of automation while still delivering the very high performance needed for high precision experiments. In this poster the current progress on the electronics part of the project, which is being developed in Hannover, will be presented. The Lasus project is a collaboration of FBH Berlin, HU Berlin, U Hamburg and LU Hannover supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number 50WM0939.