3D printed microwave cavity for atomic clock applications: proof of concept

Matthieu Pellaton, Christoph Affolderbach, Gaetano Mileti, A.K. Skrivervik, A.E. Ivanov, T. Debogovic & E. De Rijk

Résumé The authors present the realisation and characterisation of an additively manufactured (AM) microwave resonator cavity for double-resonance (DR) vapour-cell atomic clocks. The design of the compact microwave cavity is based on the loop-gap resonator approach, previously demonstrated for conventionally-machined aluminium components. In the present study, the resonator is fabricated by AM using a metal-coated polymer. A resonance frequency at the desired 6.835 GHz rubidium atomic frequency is obtained. When employed in an atomic clock setup, the AM cavity enables a DR signal of <;500 Hz linewidth and of nearly 20% contrast, thus fulfilling the stringent requirements for DR atomic clocks. A clock short-term stability of 1 × 10 -12 τ -1/2 is demonstrated, comparable to state-of-the-art clock performances.
Mots-clés atomic clocks, coatings, microwave resonators, polymers, rapid prototyping (industrial), three-dimensional printing
Citation M. Pellaton, et al., "3D printed microwave cavity for atomic clock applications: proof of concept," ELECTRONICS LETTERS, vol. 54, p. 691-693, June 2018.
Type Article de périodique (Anglais)
Date de publication 7-6-2018
Volume 54
Numéro 11
Pages 691-693
URL https://doi.org/10.1049/el.2017.4176