Sensitivity and Bandwidth of a Point-Source-Interferometry-based Inertial Measurement Unit Employing Large Momentum Transfer and Launched Atoms
arxiv(2024)
Abstract
We analyze theoretically the sensitivity and bandwidth of accelerometry and
rotation sensing with a point source interferometer employing large momentum
transfer (LMT) with molasses-launched atoms. The launching process makes it
possible to realize the LMT process without the need to physically change
directions of the Raman pulses, thus significantly simplifying the apparatus
and reducing the amount of time needed to make the measurements. These
advantages become more important when this process is used for realizing an
inertial measurement unit (IMU) that can measure rotation around and
acceleration along each of the three axes. We describe an explicit scheme for a
such an IMU and determine the expected sensitivity and bandwidth thereof for
experimentally accessible parameters.
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