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Q: Fachverband Quantenoptik und Photonik
Q 63: Ultracold Atoms (Trapping and Cooling)
Q 63.7: Talk
Friday, March 15, 2019, 12:00–12:15, S SR 211 Maschb.
A single-laser alternating-frequency magneto-optical trap — •Benjamin Wiegand1, Bastian Leykauf1, Klaus Döringshoff1, Y Durvasa Gupta1, Achim Peters1,2, and Markus Krutzik1,2 — 1Institut für Physik, HU Berlin — 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin
The miniaturization of cold atom systems is of key importance for experiments on small satellite platforms that put high demands on size, weight and power consumption as well as for future commercial applications. In that regard, the laser system plays an important role as each laser requires driving electronics, temperature stabilization and light distribution modules.
In this talk, we present a simple technique for a magneto-optical trap (MOT) that is driven by a single laser only: the alternating-frequency MOT (AF-MOT) uses an agile light source that targets cooling and repumping transitions sequentially by tuning the current of the laser diode. We report on the experimental demonstration of such a system for 87Rb and 85Rb based on a micro-integrated extended cavity diode laser (ECDL) and present the results of its characterization in terms of atom numbers, atomic density and cloud temperature for different operation parameters.
This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant numbers DLR50WM1857 and DLR50WP1702 as well as by the profile partnership project between Humboldt University of Berlin and the National University of Singapore.