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Advances in the accuracy, stability, and reliability of the PTB primary fountain clocks
S Weyers, V Gerginov, M Kazda, J Rahm… - Metrologia, 2018 - iopscience.iop.org
Improvements of the systematic uncertainty, frequency instability, and long-term reliability of
the two caesium fountain primary frequency standards CSF1 and CSF2 at PTB (Physikalisch …
the two caesium fountain primary frequency standards CSF1 and CSF2 at PTB (Physikalisch …
Cs-based optical frequency measurement using cross-linked optical and microwave oscillators
We describe a measurement of the frequency of the 2 S 1/2 (F= 0)-2 D 3/2 (F′= 2) transition
of 171Yb+ at the wavelength 436 nm (frequency 688 THz), using a single Yb+ ion confined …
of 171Yb+ at the wavelength 436 nm (frequency 688 THz), using a single Yb+ ion confined …
Optical stabilization of a microwave oscillator for fountain clock interrogation
B Lipphardt, V Gerginov… - IEEE transactions on …, 2017 - ieeexplore.ieee.org
We describe an optical frequency stabilization scheme of a microwave oscillator that is used
for the interrogation of primary cesium fountain clocks. Because of its superior phase noise …
for the interrogation of primary cesium fountain clocks. Because of its superior phase noise …
Atomic fountain clock with very high frequency stability employing a pulse-tube-cryocooled sapphire oscillator
A Takamizawa, S Yanagimachi… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
The frequency stability of an atomic fountain clock was significantly improved by employing
an ultra-stable local oscillator and increasing the number of atoms detected after the …
an ultra-stable local oscillator and increasing the number of atoms detected after the …
Initial atomic coherences and Ramsey frequency pulling in fountain clocks
In the uncertainty budget of primary atomic cesium fountain clocks, evaluations of frequency-
pulling shifts of the hyperfine clock transition caused by unintentional excitation of its nearby …
pulling shifts of the hyperfine clock transition caused by unintentional excitation of its nearby …
Microwave synthesis for the PTB cesium fountain clocks
M Kazda, V Gerginov, B Lipphardt… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Microwave synthesizers that are used to generate microwave signals for the CSF1 and
CSF2 fountain clocks at the Physikalisch-Technische Bundesanstalt (PTB) are described …
CSF2 fountain clocks at the Physikalisch-Technische Bundesanstalt (PTB) are described …
[PDF][PDF] 4-2 原子泉型一次周波数標準器 NICT-CsF1 & NICT-CsF2
熊谷基弘， 伊東宏之， 矢野雄一郎， 梶田雅稔， 相田政則… - 2019 - nict.go.jp
プである. レーザー冷却により集められた原子を, レーザー光の輻射圧で鉛直上方向に打ち上げ,
上方に設置された共振器内のマイクロ波と上昇時と下降時の 2 回相互採用させることで …
上方に設置された共振器内のマイクロ波と上昇時と下降時の 2 回相互採用させることで …
[PDF][PDF] 双变量拉比法制备冷原子及其冷原子碰撞频移的研 究
管勇， 刘丹丹， 王心亮， 张辉， 施俊如， 白杨， 阮军… - 时间频率学报, 2020 - ntsc.cas.cn
冷原子碰撞频移是影响铯喷泉钟频率不确定度性能的主要频移项之一. 采用差分法评定该项频移
时, 其不确定度来源于原子团密度比的误差和高低密度运行状态下的频率波动 …
时, 其不确定度来源于原子团密度比的误差和高低密度运行状态下的频率波动 …
[معلومات الإصدار][C] Advanced microwave control for atomic fountain clocks
M Kazda - 2018 - Mensch und Buch Verlag