A Single Laser Operated Cold Atom Gravimeter
Bhardwaj K., Singh S., Ram S.P., Jain B., Kumar V., Pathak A., Tiwari S.

Received: April 21, 2025

DOI: 10.31857/S004445102508005X

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A cold atom gravimeter (CAG) using a single laser system has been developed. In the setup, the laser cooled ⁸⁷Rb 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 μ Gal 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.