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arXiv · 2108.12008

A simple imaging solution for chip-scale laser cooling

A. Bregazzi·P. F. Griffin·A. S. Arnold·D. P. Burt·G. Martinez·R. Boudot·J. Kitching·E. Riis·J. P. McGilligan
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Abstract

We demonstrate a simple stacked scheme that enables absorption imaging through a hole in the surface of a grating magneto-optical trap (GMOT) chip, placed immediately below a micro-fabricated vacuum cell. The imaging scheme is capable of overcoming the reduced optical access and surface scatter that is associated with this chip-scale platform, while further permitting both trapping and imaging of the atoms from a single incident laser beam. The through-hole imaging is used to characterise the impact of the reduced optical overlap volume of the GMOT in the chip-scale cell, with an outlook to an optimised atom number in low volume systems.

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A. Bregazzi, P. F. Griffin, A. S. Arnold, D. P. Burt, G. Martinez, R. Boudot, J. Kitching, E. Riis, J. P. McGilligan. 2021-08-26. A simple imaging solution for chip-scale laser cooling. https://doi.org/10.1063/5.0068725

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