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Optics Communications

A compact laser system for the cold atom gravimeter

Qiyu Wang, Zhaoying Wang, Zhijie Fu, Weiyong Liu, Qiang Lin

Published Sep 18, 2015• 41 citations
Publisher
DOI
10.1016/j.optcom.2015.09.001

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A cold atom gravimeter (CAG) using a single laser system has been developed. In the setup, the laser cooled Rb atoms are launched in the vertical upward direction and Doppler sensitive two-photon Raman pulse atom interferometry is applied to measure the gravitational acceleration g experienced by the atoms. Using our gravimeter setup, we have measured the local value of g in our laboratory with a sensitivity of 621 μGal for integration time of 1350 s. The use of single laser system keeps our CAG setup simple and compact, and does not require the phase-locking of different lasers.