A simple laser system for atom interferometry
Atomic Physics
2015-06-22 v1
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.
Cite
@article{arxiv.1406.5994,
title = {A simple laser system for atom interferometry},
author = {Sébastien Merlet and Laurent Volodimer and Michel Lours and Franck Pereira Dos Santos},
journal= {arXiv preprint arXiv:1406.5994},
year = {2015}
}