Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster VII
Q 56.17: Poster
Thursday, March 14, 2024, 17:00–19:00, KG I Foyer
Absolute light-shift compensated laser system for a twin-lattice atom interferometry — •Mikhail Cheredinov1, Matthias Gersemann1, 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 Berlin — 4Institut für Quantenphysik, Uni Ulm — 5Institut für Angewandte Physik, TU Darmstadt — 6Institut für Physik, JGU Mainz
Twin-lattice atom interferometry (AI) is a method for forming symmetric interferometers with matter waves of large relative momentum spitting by using two counter-propagating optical lattices. It has a prospect of enabling highly sensitive inertial measurements.
A limiting factor for large momentum transfer is the loss of contrast, associated with the differential absolute light shift of far detuned light fields, linked to light fields imperfections. Thanks to a flat-top shaped beam and addition of an oppositely detuned light field, this limitation can be mitigated, and new records in momentum separation can be achieved. This contribution presents the realization of a high power laser system for absolute light shift compensated twin-lattice AI with a monolithically mounted flat-top beam shaper.
We acknowledge financial support from the Deutsche Forschungs-gemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC-2123 QuantumFrontiers - 390837967 and from DLR with funds provided by the BMWi under grant no. DLR 50WM2250 (QUANTUS+).
Keywords: Absolute light shift; Flat-Top beam profile; Bragg diffraction; Bloch oscillations; Bose–Einstein condensate