Chip-scale packages for a tunable wavelength reference and laser cooling platform

Dyer, S. and Gallacher, K. and Hawley, U. and Bregazzi, A. and Griffin, P.F. and Arnold, A.S. and Paul, D.J. and Riis, E. and McGilligan, J.P. (2023) Chip-scale packages for a tunable wavelength reference and laser cooling platform. Physical Review Applied, 19 (4). 044015. ISSN 2331-7043 (

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We demonstrate a tunable, chip-scale wavelength reference to greatly reduce the complexity and volume of cold-atom sensors. A 1-mm optical path length microfabricated cell provides an atomic wavelength reference, with dynamic frequency control enabled by Zeeman-shifting the atomic transition through the magnetic field generated by the printed-circuit-board coils. The dynamic range of the laser frequency stabilization system is evaluated and used in conjunction with an improved generation of chip-scale cold-atom platforms that traps 4 million 87Rb atoms. The scalability and component consolidation provide a key step forward in the miniaturization of cold-atom sensors.


Dyer, S., Gallacher, K., Hawley, U., Bregazzi, A., Griffin, P.F. ORCID logoORCID:, Arnold, A.S. ORCID logoORCID:, Paul, D.J., Riis, E. ORCID logoORCID: and McGilligan, J.P. ORCID logoORCID:;