Optical atomic clocks
Optical atomic clocks represent the state of the art in the frontier of modern measurement
science. In this article a detailed review on the development of optical atomic clocks that are …
science. In this article a detailed review on the development of optical atomic clocks that are …
Cryogenic optical lattice clocks
I Ushijima, M Takamoto, M Das, T Ohkubo, H Katori - Nature Photonics, 2015 - nature.com
The accuracy of atomic clocks relies on the superb reproducibility of atomic spectroscopy,
which is accomplished by careful control and the elimination of environmental perturbations …
which is accomplished by careful control and the elimination of environmental perturbations …
A strontium lattice clock with inaccuracy and its frequency
We have measured the absolute frequency of the optical lattice clock based on 87 Sr at PTB
with an uncertainty of $3.9\times {{10}^{-16}} $ using two caesium fountain clocks. This is …
with an uncertainty of $3.9\times {{10}^{-16}} $ using two caesium fountain clocks. This is …
Frequency Ratio of and Optical Lattice Clocks beyond the SI Limit
K Yamanaka, N Ohmae, I Ushijima, M Takamoto… - Physical review …, 2015 - APS
We report on a frequency ratio measurement of a Hg 199-based optical lattice clock
referencing a Sr 87-based clock. Evaluations of lattice light shift, including atomic-motion …
referencing a Sr 87-based clock. Evaluations of lattice light shift, including atomic-motion …
Narrow-line cooling and determination of the magic wavelength of Cd
A Yamaguchi, MS Safronova, K Gibble, H Katori - Physical review letters, 2019 - APS
We experimentally and theoretically determine the magic wavelength of the (5 s 2) S 1 0-(5 s
5 p) P 0 3 clock transition of Cd 111 to be 419.88 (14) and 420.1 (7) nm. To perform Lamb …
5 p) P 0 3 clock transition of Cd 111 to be 419.88 (14) and 420.1 (7) nm. To perform Lamb …
Status of the growth and fabrication of AlGaN-based UV laser diodes for near and mid-UV wavelength
In this article, the development of mid-UV laser diodes based on the AlGaN materials system
is reviewed. The targeted wavelength for these lasers covers the range from 200 to 350 nm …
is reviewed. The targeted wavelength for these lasers covers the range from 200 to 350 nm …
Frequency ratios of Sr, Yb, and Hg based optical lattice clocks and their applications
M Takamoto, I Ushijima, M Das… - Comptes …, 2015 - comptes-rendus.academie-sciences …
490 M. Takamoto et al./CR Physique 16 (2015) 489–498 phase. Nous commençons par une
revue des horloges optiques à Sr cryogéniques qui réduisent le décalage de fréquence dû …
revue des horloges optiques à Sr cryogéniques qui réduisent le décalage de fréquence dû …
Prototype of an ultra-stable optical cavity for space applications
B Argence, E Prevost, T Lévèque, R Le Goff, S Bize… - Optics express, 2012 - opg.optica.org
We report the main features and performances of a prototype of an ultra-stable cavity
designed and realized by industry for space applications with the aim of space missions …
designed and realized by industry for space applications with the aim of space missions …
Comparing a mercury optical lattice clock with microwave and optical frequency standards
In this paper we report the evaluation of an optical lattice clock based on neutral mercury
with a relative uncertainty of $1.7\times {10}^{-16} $. Comparing this characterized frequency …
with a relative uncertainty of $1.7\times {10}^{-16} $. Comparing this characterized frequency …