New generation of a mobile primary frequency standard based on cold atoms

7th Brazilian Congress on Metrology

Müller, S.T.^1 ; De Martin Júnior, J.^1 ; Pechoneri, R.D.^1 ; Santa Catharina, P.^1 ; Bagnato, V.S.^2 ; Magalhães, D.V.^1

Departamento de Engenharia Mecânica, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, Brazil^1

Departamento de Física e Ciência Dos Materiais, Instituto de Física de São Carlos, Universidade de São Paulo, Sao Carlos, Brazil^2

关键词: Atomic standards;    Cold atoms;    Cold cesium atoms;    Intracavities;    Microwave sources;    Primary frequency standard;    Primary standards;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/575/1/012030/pdf
DOI  :  10.1088/1742-6596/575/1/012030

来源: IOP

【 摘 要 】

We have constructed a mobile primary frequency standard using intra-cavity cold cesium atoms and the results have shown the advantages of using this kind of system compared to cesium beam standards. Based on the first setup with an expanding cloud of atoms, we can plan the construction of a clock more compact since it has no strict size limitations. In order to assemble the new system even smaller, the development of a system containing lasers, microwave source and cavity in a single box has already begun. The mobile atomic standard based on cold atoms is a possible strategic product with a broad range of applications and an important contribution to a primary standard of high relevance.