Pré-Publication, Document De Travail Année : 2014

A simple laser system for atom interferometry

Résumé

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.

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hal-01010972 , version 1 (21-06-2014)

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Sébastien Merlet, Laurent Volodimer, Michel Lours, Franck Pereira dos Santos. A simple laser system for atom interferometry. 2014. ⟨hal-01010972⟩
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