Towards precision gravimetry using light-pulse atom interferometry


Heffer, JS (2017) Towards precision gravimetry using light-pulse atom interferometry. PhD thesis, University of Liverpool.

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Abstract

A light-pulse atom interferometer for inertial sensing applications such as gravimetry is being commissioned, where the prototype has a target relative precision (σ g /g) of one part per million to enable geophysics applications, which is three orders of magnitude less sensitive than commercial optical gravimeters, but with the potential to exceed these. As part of this, a rubidium-85 magneto-optical trap was upgraded using optical amplification and fibre optics to capture an atom population number of O(10 8 ) and sub-Doppler cooling techniques have been used to reach ultracold temperatures of 20 μK. Several interferometer subsystems have been developed, including extensive optical systems featuring a high-specification optical modulator and laser-induced fluorescence detection. Preliminary investigations into the coherent manipulation of atomic states have been implemented and the resonance peak of a stimulated Raman transition has been observed.

Item Type: Thesis (PhD)
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 13 Aug 2018 10:03
Last Modified: 01 Aug 2023 01:30
DOI: 10.17638/03014202
Supervisors:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3014202
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