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A precision analysis and determination of the technical requirements of an atom interferometer for gravity measurement |
Zhao-ying WANG (王兆英), Tao CHEN (陈涛), Xiao-long WANG (王肖隆), Zhang ZHANG (张璋), Yun-fei XU (徐云飞), Qiang LIN (林强, ) |
| Institute of Optics, Department of Physics, Zhejiang University, Hangzhou 310027, China |
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Abstract The influence of the wave-front curvature of Raman pulses on the measurement precision of gravitational acceleration in atom interferometry is analysed by the method of a transmission matrix. It is shown that the measurement precision of gravitational acceleration is largely dependent on the spot size of the Raman pulse, the temporal interval between Raman pulses and the optical path difference of the two counter-propagating Raman pulses. Moreover, the influence of Doppler frequency shift on the precision is discussed. In order to get a certain measurement precision, the requirement for the accuracy of frequency scanning of the Raman pulse to compensate for the Doppler frequency shift is obtained.
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| Keywords
atom interferometry
measurement precision
gravitational acceleration
wave-front curvature
Doppler shift
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Corresponding Author(s):
Qiang LIN (林强),Email:qlin@zju.edu.cn
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Issue Date: 05 June 2009
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