A precision analysis and determination of the technical requirements of an atom interferometer for gravity measurement

作者：Wang Zhao ying; Chen Tao; Wang Xiao long; Zhang Zhang; Xu Yun fei; Lin Qiang^*

来源：Frontiers of Physics in China, 2009, 4(2): 174-178.

DOI：10.1007/s11467-009-0017-7

• atom interferometry
• measurement precision
• gravitational acceleration
• wave-front curvature
• Doppler shift

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.

• 出版日期2009-6
• 单位浙江大学