Double-resonance spectroscopy in Rubidium vapour-cells for high performance and miniature atomic clocks

7th International Symposium and Young Scientists School "Modern Problems of Laser Physics"

Gharavipour, M.^1 ; Affolderbach, C.^1 ; Kang, S.^2 ; Mileti, G.^1

Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchatel, Switzerland^1

Time and Frequency Division, National Institute of Standards and Technology, Boulder

CO, United States^2

关键词: Acousto optical modulators;    Continuous Wave;    Double resonance;    Double-resonance spectroscopy;    Frequency stabilized lasers;    Laser heads;    Light output power;    Light shift;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/793/1/012007/pdf
DOI  :  10.1088/1742-6596/793/1/012007

来源: IOP

【 摘 要 】

We report our studies on using microwave-optical double-resonance (DR) spectroscopy for a high-performance Rb vapour-cell atomic clock in view of future industrial applications. The clock physics package is very compact with a total volume of only 0.8 dm3. It contains a recently in-house developed magnetron-type cavity and a Rb vapour cell. A homed-made frequency-stabilized laser system with an integrated acousto-optical-modulator (AOM) - for switching and controlling the light output power- is used as an optical source in a laser head (LH). The LH has the overall volume of 2.5 dm3including the laser diode, optical elements, AOM and electronics. In our Rb atomic clock two schemes of continuous-wave DR and Ramsey-DR schemes are used, where the latter one strongly reduces the light-shift effect by separation of the interaction of light and microwave. Applications of the DR clock approach to more radically miniaturized atomic clocks are discussed.