ZERODUR® based optical systems for quantum gas experiments in space. (June 2019)

• Record Type: Journal Article
• Authors: Mihm, Moritz; Marburger, Jean Pierre; Wenzlawski, André; Hellmig, Ortwin; Anton, Oliver; Döringshoff, Klaus; Krutzik, Markus; Peters, Achim; Windpassinger, Patrick; the MAIUS Team,
• Is Part Of: Acta astronautica. Volume 159(2019)
• Page Start: 166
• Page End: 169
• Publication Date: 2019-06
• Subjects: Microgravity -- Optical bench -- Laser system -- Integrated optics -- Glass ceramic -- ZERODUR®; Astronautics -- Periodicals; Outer space -- Exploration -- Periodicals; Astronautics; Periodicals; 629.405
• DOI: 10.1016/j.actaastro.2019.03.060
• Languages: English
• ISSNs: 0094-5765

Abstract

Abstract: Numerous quantum technologies make use of a microgravity environment e.g. in space. Operating in this extreme environment makes high demands on the experiment and especially the laser system regarding miniaturization and power consumption as well as mechanical and thermal stability. In our systems, optical modules consisting of ZERODUR ® based optical benches with free-space optics are combined with fiber components. Suitability of the technology has been demonstrated in the successful sounding rocket missions FOKUS, KALEXUS and MAIUS-1. Here, we report on our toolkit for stable optical benches including mounts, fixed and adjustable mirrors as well as polarization maintaining fiber collimators and couplers made from ZERODUR ® . As an example, we present the optical modules for the scientific rocket payload of MAIUS-2, a quantum gas experiment performing dual-species atom interferometry with Bose-Einstein condensates. The modules are used on the one hand to stabilize the laser frequencies and on the other hand to distribute, overlap and switch the laser beams. This includes the overlap and joint fiber coupling of beams at 767 nm and 780 nm in the same polarization state to cool and manipulate atoms of both species simultaneously. Future projects include the development of a platform for experiments with cold atoms onboard the International Space Station. The laser system again involves ZERODUR ® based optical benches in conjunction with fiber optical components. The experiment is planned as multi-user facility and currently in the design phase. The next step is to build the training, test and flight hardware. Highlights: Optical modules based on Zerodur are ideally suited for laser systems in space. A flexible toolkit allows all sorts of laser system functions and applications. The technology is used for quantum gas experiments onboard sounding rockets.