Frequency ratio measurement of ^171Yb and ^87Sr optical lattice clocks

An optical lattice clock with accuracy and stability at the 10−18 level

(2014) B. J. Bloom et al.   NATURE

Spectroscopy and frequency measurement of the87Sr clock transition by laser linewidth transfer using an optical frequency comb

(2013) Daisuke Akamatsu et al.   Applied Physics Express

Absolute frequency measurement of1S0(F= 1/2)–3P0(F= 1/2) transition of171Yb atoms in a one-dimensional optical lattice at KRISS

(2013) Chang Yong Park et al.   METROLOGIA

An Atomic Clock with 10-18 Instability

(2013) N. Hinkley et al.   SCIENCE

Stability Transfer between Two Clock Lasers Operating at Different Wavelengths for Absolute Frequency Measurement of Clock Transition in $^{87}$Sr

(2012) Atsushi Yamaguchi et al.   Applied Physics Express

Improved Absolute Frequency Measurement of the $^{171}$Yb Optical Lattice Clock towards a Candidate for the Redefinition of the Second

(2012) Masami Yasuda et al.   Applied Physics Express

Direct comparison of a Ca^+ single-ion clock against a Sr lattice clock to verify the absolute frequency measurement

(2012) Kensuke Matsubara et al.   OPTICS EXPRESS

Narrow linewidth laser system realized by linewidth transfer using a fiber-based frequency comb for the magneto-optical trapping of strontium

(2012) Daisuke Akamatsu et al.   OPTICS EXPRESS

Narrow linewidth comb realized with a mode-locked fiber laser using an intra-cavity waveguide electro-optic modulator for high-speed control

(2012) Kana Iwakuni et al.   OPTICS EXPRESS

The87Sr optical frequency standard at PTB

(2011) St Falke et al.   METROLOGIA

Frequency comparison of optical lattice clocks beyond the Dick limit

(2011) Masao Takamoto et al.   Nature Photonics

A compact light source at 461 nm using a periodically poled LiNbO_3 waveguide for strontium magneto-optical trapping

(2011) Daisuke Akamatsu et al.   OPTICS EXPRESS

Fiber-comb-stabilized light source at 556 nm for magneto-optical trapping of ytterbium

(2010) Masami Yasuda et al.   JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

A multi-branch, fiber-based frequency comb with millihertz-level relative linewidths using an intra-cavity electro-optic modulator

(2010) Yoshiaki Nakajima et al.   OPTICS EXPRESS

Frequency Comparison of Two High-AccuracyAl+Optical Clocks

(2010) C. Chou et al.   PHYSICAL REVIEW LETTERS

Optical Clocks and Relativity

(2010) C. W. Chou et al.   SCIENCE

Doppler-free spectroscopy of molecular iodine using a frequency-stable light source at 578 nm

(2009) Feng-Lei Hong et al.   OPTICS EXPRESS

Measuring the frequency of a Sr optical lattice clock using a 120 km coherent optical transfer

(2009) F.-L. Hong et al.   OPTICS LETTERS

Spin-1/2Optical Lattice Clock

(2009) N. Lemke et al.   PHYSICAL REVIEW LETTERS

The absolute frequency of the87Sr optical clock transition

(2008) Gretchen K Campbell et al.   METROLOGIA

New Limits on Coupling of Fundamental Constants to Gravity UsingSr87Optical Lattice Clocks

(2008) S. Blatt et al.   PHYSICAL REVIEW LETTERS

Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place

(2008) T. Rosenband et al.   SCIENCE