1. Forschung
  2. Publikationen
  3. A single-laser alternating-fre ...


Wissenschaftliche Beiträge

 zu Konferenzen finden Sie übrigens auch bei den Terminen.

A single-laser alternating-frequency magneto-optical trap

B. Wiegand1, B. Leykauf1, K. Döringshoff1, Y.D. Gupta1, A. Peters1,2, and M. Krutzik1,2

Published in:

Rev. Sci. Instrum., vol. 90, no. 10, pp. 103202 (2019).


In this paper, we present a technique for magneto-optical cooling and trapping of neutral atoms using a single laser. The alternating-frequency magneto-optical trap (AF-MOT) uses an agile light source that sequentially switches between cooling and repumping transition frequencies by tuning the injection current of the laser diode. We report on the experimental demonstration of such a system for 87Rb and 85Rb based on a microintegrated extended cavity diode laser performing laser frequency jumps of up to 6.6 GHz with a tuning time in the microsecond regime and a repetition rate of up to 7.6 kHz. For that, a combination of a feed-forward for coarse frequency control and a feedback for precise locking was used. We discuss the results of the AF-MOT characterization in terms of atom numbers and cloud temperature for different operation parameters.

1 Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
2 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, 12489 Berlin, Germany

Published under license by AIP Publishing. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the AIP Publishing.

Full version in pdf-format.