@article{4e27aade7a1241fb85e2253e558dff8e,
title = "Note: Directly measuring the direct digital synthesizer frequency chirp-rate for an atom interferometer",
abstract = "During gravity measurements with Raman type atom interferometry, the frequency of the laser used to drive Raman transition is scanned by chirping the frequency of a direct digital synthesizer (DDS), and the local gravity is determined by precisely measuring the chip rate α of DDS. We present an effective method that can directly evaluate the frequency chirp rate stability of our DDS. By mixing a pair of synchronous linear sweeping signals, the chirp rate fluctuation is precisely measured with a frequency counter. The measurement result shows that the relative α instability can reach 5.7 × 10-11 in 1 s, which is neglectable in a 10-9 g level atom interferometry gravimeter.",
author = "Tao, {Juan Juan} and Zhou, {Min Kang} and Zhang, {Qiao Zhen} and Cui, {Jia Feng} and Duan, {Xiao Chun} and Shao, {Cheng Gang} and Hu, {Zhong Kun}",
note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.",
year = "2015",
month = sep,
day = "1",
doi = "10.1063/1.4930562",
language = "English",
volume = "86",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics",
number = "9",
}