Year: 1991
Type: article
Abstract: We report a realization of Zacharias's 1953 proposal for observing a Ramsey resonance in an atomic fountain. Launched upward from a moving optical molasses where they have been cooled to ∼ 5 μK, cesium atoms pass once through a microwave cavity, continue to the summit of their trajectory, then fall again through the same cavity, completing the separated-fields interaction. The atoms spend 0.25 s in free flight above the cavity. Linewidth (2 Hz) and S/N imply a stability of 3·10 -12 τ -1/2 , at least as good as in existing Cs clocks, with eventual expected improvements of 10 2 .
Source: Europhysics Letters (EPL)
Authors: A Clairon, C Salomon, S Guellati, W. D Phillips
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2002365364