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Springer (part of Springer Nature), Applied Physics B: Lasers and Optics, 2(117), p. 749-754

DOI: 10.1007/s00340-014-5890-2

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A simple laser system for atom interferometry

Journal article published in 2014 by Sébastien Merlet, Laurent Volodimer, Michel Lours, Franck Pereira Dos Santos ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We present here a simple laser system for a laser cooled atom interferometer, where all functions (laser cooling, interferometry and detection) are realized using only two extended cavity laser diodes, amplified by a common tapered amplifier. One laser is locked by frequency modulation transfer spectroscopy, the other being phase locked with an offset frequency determined by an Field-Programmable Gate Array (FPGA) controlled Direct Digital Synthesizer (DDS), which allows for efficient and versatile tuning of the laser frequency. Raman lasers are obtained with a double pass acousto-optic modulator. We demonstrate a gravimeter using this laser system, with performances close to the state of the art.