Erlangen 2022 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 13: Precision Measurements and Metrology I (joint session Q/A)
A 13.9: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Absolute light-shift compensated laser system for a twin-lattice atom interferometry — •Mikhail Cheredinov1, Matthias Gersemann1, Martina Gebbe2, Ekim T. Hanimeli2, Simon Kanthak3, Sven Abend1, Ernst M. Rasel1, and the QUANTUS team1,2,3,4,5,6 — 1Institut für Quantenoptik, LU Hannover — 2ZARM, Uni Bremen — 3Institut für Physik, HU zu Berlin — 4Institut für Quantenphysik, Uni Ulm — 5Institut für Angewandte Physik, TU Darmstadt — 6Institut für Physik, JGU Mainz
Twin-lattice interferometry is a method to form symmetric interferometers featuring matter waves with large relative momentum by employing two counterpropagating optical lattices. A limiting factor here is loss of contrast, linked to the AC-Stark effect from far detuned light. This contribution presents the realisation of an absolute light-shift compensation and its potential to increase the interferometric contrast. The optical setup utilizes two independent frequency doubling stages. Key features are beam overlap on an interference filter with low power loss and coupling of high optical power in a photonic crystal fiber, opening up possibilities for new records in momentum transfer.
This work is supported by the DLR with funds provided by the BMWi under grant no. DLR 50WM1952-1957 (Q-V-Ft), DLR 50RK1957 (QGyro) and DLR 50NA2106 (QGyro+), the VDI with funds provided by the BMBF under grant no. VDI 13N14838 (TAIOL) and by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC-2123 QuantumFrontiers 390837967.