Integrated Atomic Quantum Technologies in Demanding Environments: Development and Qualification of Miniaturized Optical Setups and Integration Technologies for UHV and Space Operation
Proc.SPIE 11180, International Conference on Space Optics (ICSO 2018), Chania, Greece, Oct.9-12, 1118088 (2019).
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Employing compact quantum sensors in field or in space (e.g., small satellites) implies demanding requirements on components and integration technologies. Within our work on integrated sensors, we develop miniaturized, ultra-stable optical setups for optical cooling and trapping of cold atomic gases. Besides challenging demands on alignment precision, and thermo-mechanical durability, we specifically address ultra-high vacuum (UHV) compatibility of our integration technologies and optical components. A prototype design of an UHV-compatible, crossed beam optical dipole trap setup and its application within a cold atomic quantum sensor is described.
First qualification efforts on adhesive micro-integration technologies are presented. These tests are conducted in application-relevant geometries and material combinations common for micro-integrated optical setups. Adhesive aging will be investigated by thermal cycling or gamma radiation exposure. For vacuum compatibility testing, a versatile UHV testing system is currently being set up, enabling residual gas analysis and measurement of total gas rates down to 5⋅10-10mbar l/s at a base pressure of 10-11mbar, exceeding the common ASTM E595 test.
a Humboldt-Universität zu Berlin, Optical Metrology Group - Quantum Sensors and Space Technology, Newtonstr. 15, 12489 Berlin, Germany
b Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
c Leibniz University Hanover, Institute of Micro Production Technology, An der Universität 2, 30823 Garbsen, Germany
d Leibniz University Hanover, Institute of Quantum Optics, Welfengarten 1, 30167 Hannover, Germany
Micro-integration, Adhesive, Outgassing, Residual gas analysis, Quantum sensors, Environmental testing, Qualification, Ultra-high vacuum, Miniaturized optical setups, Cold atoms.