Erlangen 2022 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Ultracold Atoms and Molecules I (joint session Q/A)
A 25.4: Vortrag
Donnerstag, 17. März 2022, 11:15–11:30, Q-H10
Optical bench system for the BECCAL ISS quantum gas experiment — •Jean Pierre Marburger1, Faruk Alexander Sellami1, Esther del Pino Rosendo1, André Wenzlawski1, Ortwin Hellmig2, Klaus Sengstock2, Patrick Windpassinger1, and THE BECCAL TEAM1,3,4,5,6,7,8,9,10,11 — 1Institut für Physik, JGU, Mainz — 2ILP, UHH, Hamburg — 3HUB — 4FBH — 5LUH — 6ZARM — 7Universität Ulm — 8DLR-SC — 9DLR-SI — 10DLR-QT — 11OHB
The DLR-NASA BECCAL multi-user experimental facility is intended for the study of quantum gases in the microgravity environment of the ISS. In this talk, we present a stable optical bench system that enables frequency stabilization, as well as efficient light distribution and manipulation for this facility. In contrast to a lab-based setup, this system needs to withstand the mechanical loads during launch, and be mechanically stable under varying temperature conditions on the ISS over a timeframe of many years. To this end, we use and expand upon an optical toolkit based on the glass-ceramic Zerodur, which has a negligible coefficient of thermal expansion. This toolkit has already been successfully deployed in the scope of the sounding rocket missions KALEXUS, FOKUS, MAIUS-1, and will be used for the upcoming MAIUS-2/3 missions.
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.