Reaching 5.0×10-13 τ -1/2 short term frequency stability of the integrating sphere cold atom clock

8th Symposium on Frequency Standards and Metrology 2015

Liu, P.^1 ; Meng, Y.L.^1 ; Wan, J.Y.^1 ; Wang, X.M.^1 ; Wang, Y.N.^1 ; Xiao, L.^1 ; Cheng, H.D.^1 ; Liu, L.^1

Key Laboratory of Quantum Optics, Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai

201800, China^1

关键词: Clock signal;    Cold atom clocks;    Feed-back loop;    Integrating spheres;    Short term frequency stability;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/723/1/012007/pdf
DOI  :  10.1088/1742-6596/723/1/012007

来源: IOP

【 摘 要 】

We present an improvement of short term frequency stability of the integrating sphere cold atom clock after increasing the intensities of clock signals and optimizing the feedback loop of the clock. A short term frequency stability of 5.0×10-13τ-1/2has been achieved and the limiting factors have been analyzed.