A chip-scale atomic beam clock.

ABSTRACT: Atomic beams are a longstanding technology for atom-based sensors and clocks with widespread use in commercial frequency standards. Here, we report the demonstration of a chip-scale microwave atomic beam clock using coherent population trapping (CPT) interrogation in a passively pumped atomic beam device. The beam device consists of a hermetically sealed vacuum cell fabricated from an anodically bonded stack of glass and Si wafers in which lithographically defined capillaries produce Rb atomic beams and passive pumps maintain the vacuum environment. A prototype chip-scale clock is realized using Ramsey CPT spectroscopy of the atomic beam over a 10 mm distance and demonstrates a fractional frequency stability of ≈1.2 × 10^-9/[Formula: see text] for integration times, τ, from 1 s t

SUBMITTER: Martinez GD 

PROVIDER: S-EPMC10264367 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature