Compact atomic clock prototype based on coherent population trapping
نویسندگان
چکیده
منابع مشابه
Performance of a prototype atomic clock based on lin‖ lin coherent population trapping resonances in Rb atomic vapor
We report on the performance of the first table-top prototype atomic clock based on coherent population trapping (CPT) resonances with parallel linearly polarized optical fields (lin lin configuration). Our apparatus uses a vertical-cavity surface-emitting laser (VCSEL) tuned to the D1 line of Rb with the current modulation at the Rb hyperfine frequency. We demonstrate cancellation of the first...
متن کاملA Cold-Atom Clock Based on Coherent Population Trapping
A compact cold-atom clock based on coherent population trapping is being developed. The clock aims to ultimately achieve a timing uncertainty of a few nanoseconds per day. Here we present an initial evaluation of the three main systematic frequency shifts – the first-order Doppler shift, the light shift, and the Zeeman shift. Planned steps to reduce the size of these shifts will also be presented.
متن کاملCold-atom double- coherent population trapping clock
F.-X. Esnault,1,2 E. Blanshan,1 E. N. Ivanov,3 R. E. Scholten,4 J. Kitching,1 and E. A. Donley1,* 1National Institute of Standards and Technology, Boulder, Colorado 80305, USA 2Centre National d’Etudes Spatiales, 18 Avenue Edouard Belin, 31400 Toulouse, France 3School of Physics, The University of Western Australia, Crawley, Western Australia 6009, Australia 4School of Physics, The University o...
متن کاملModulation-induced frequency shifts in a coherent-population-trapping-based atomic clock
We investigate systematic errors associated with a common modulation technique used for phase-sensitive detection of a coherent-population-trapping (CPT) resonance. In particular, we show that modification of the CPT resonance line shape due to the presence of off-resonant fields leads to frequency shifts that may limit the stability of CPT-based atomic clocks. We also demonstrate that an alter...
متن کاملCharacterization of coherent population-trapping resonances as atomic frequency references
A low-cost, potentially compact and robust microwave frequency reference can be constructed by use of vertical-cavity surface-emitting lasers and coherent population-trapping resonances in Cs vapor cells. Fractional frequency instabilities of 2 3 10211/At/s have been achieved with a minimum of 7 3 10213 at t 5 1000 s. The performance of this device as a function of external parameters such as l...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2014
ISSN: 2100-014X
DOI: 10.1051/epjconf/20147700017