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A: Fachverband Atomphysik
A 25: Ultracold Atoms and Molecules I (joint session Q/A)
A 25.1: Vortrag
Donnerstag, 17. März 2022, 10:30–10:45, Q-H10
Compact and Robust Laser System for Cold Atom Experiments in BECCAL on the ISS — •Tim Kroh1, Victoria A. Henderson1, Jean Pierre Marburger2, Faruk Alexander Sellami2, Esther del Pino Rosendo2, André Wenzlawski2, Matthias Dammasch3, Ahmad Bawamia3, Andreas Wicht3, Patrick Windpassinger2, Achim Peters1,3, and THE BECCAL TEAM1,2,3,4,5,6,7,8,9,10,11 — 1HUB, Berlin — 2JGU, Mainz — 3FBH, Berlin — 4DLR-SC — 5DLR-SI — 6DLR-QT — 7IQ & IMS, LUH — 8ILP, UHH — 9ZARM, Bremen — 10IQO, UULM — 11OHB
BECCAL (Bose-Einstein Condensate--Cold Atom Laboratory) is a cold atom experiment designed for operation on the ISS. This DLR and NASA collaboration builds upon the heritage of sounding rocket and drop tower experiments as well as NASA's CAL. Fundamental physics with Rb and K BECs and ultra-cold atoms will be explored in this multi-user facility in microgravity, providing prolonged timescales and ultra-low energy scales compared to those achievable on earth. Matching the complexity of the required light fields to the stringent size, weight, and power limitations presents a unique challenge for the laser system design, which is met by a reliable and robust combination of micro-integrated diode lasers (from FBH) and miniaturized free-space optics on Zerodur boards (from JGU), interconnected with fiber optics. The design of the BECCAL laser system will be presented, alongside the requirements, concepts, and heritage which formed it. This work is supported by DLR with funds provided by the BMWi under grant numbers 50 WP 1433, 1702, 1703, 1704, 2102, 2103, and 2104.