Low-phase noise and high-power laser for Bragg atom interferometer

We present a laser system with low-phase noise and an output power up to 8.8 W at 780 nm for driving Bragg transitions in a    87 R b fountain. An optical phase-locked loop (OPLL) is employed to restrain the phase noise that arises from the spatial separation of the two Bragg beams at low frequencie...

Full description

Saved in:
Bibliographic Details
Published in:AIP advances 2017-09, Vol.7 (9), p.095211-095211-6
Main Authors: Cheng, Yuan, Zhang, Ke, Chen, Le-Le, Xu, Wen-Jie, Luo, Qin, Zhou, Min-Kang, Hu, Zhong-Kun
Format: Article
Language:English
Subjects:
Beams (radiation)
Lasers
Noise
Phase locked loops
Phase noise
Recoil
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present a laser system with low-phase noise and an output power up to 8.8 W at 780 nm for driving Bragg transitions in a    87 R b fountain. An optical phase-locked loop (OPLL) is employed to restrain the phase noise that arises from the spatial separation of the two Bragg beams at low frequencies. The residual phase variance is suppressed by two orders around 400 Hz. A Mach-Zehnder Bragg atom interferometer, based on the four-photon recoil scheme, has been realized using this laser system. This interferometer shows a resolution of 5 × 1 0 − 9 g at an integration time of 1200 s for gravity measurements.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5001963