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Q: Fachverband Quantenoptik und Photonik
Q 62: Precision Measurements: Gravity II
Q 62.1: Vortrag
Freitag, 10. März 2023, 11:00–11:15, E214
Optical Zerodur Bench Toolkit for the BECCAL Cold Atom Experiment — •Faruk Alexander Sellami1, Jean Pierre Marburger1, Esther del Pino Rosendo1, André Wenzlawski1, Ortwin Hellmig2, Klaus Sengstock2, Tim Kroh3, Victoria Henderson3, Patrick Windpassinger1, and The MAIUS and BECCAL team1,2,3,4,5,6,7,8,9,10,11 — 1Institut für Physik, JGU, Mainz — 2ILP, UHH, Hamburg — 3Institut für Physik, HU Berlin, Berlin — 4FBH, Berlin — 5IQ & IMS, LUH, Hannover — 6ZARM, Bremen — 7Institut für Quantenoptik, Universität Ulm, Ulm — 8DLR-SC, Braunschweig — 9DLR-SI, Hannover — 10DLR-QT, Ulm — 11OHB-SE, Bremen
The NASA-DLR BECCAL experiment will be a facility for the study of BECs of rubidium and potassium atoms in the microgravity environment of the ISS. For the required laser light distribution and intensity control of several light fields to manipulate the atoms we use an optical bench toolkit based on the glass ceramic Zerodur, which has been already successfully operated in sounding rocket experiments. This material has a negligible coefficient of thermal expansion and can withstand the mechanical shocks during rocket launch as well as temperature and pressure fluctuations to guarantee a stable functionality during the multi-year duration aboard the ISS. Multiple tests of several prototypes are presented. Our work is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50 WP 1433, 50 WP 1703 and 50 WP 2103.