Ultrastable laser with average fractional frequency drift rate below 5 × 10^−19/s

A strontium lattice clock with 3 × 10−17inaccuracy and its frequency

(2014) Stephan Falke et al.   NEW JOURNAL OF PHYSICS

Reduction of residual amplitude modulation to 1 × 10^-6 for frequency modulation and laser stabilization

(2014) W. Zhang et al.   OPTICS LETTERS

Providing $10^{-16}$ Short-Term Stability of a 1.5-$\mu\hbox{m}$ Laser to Optical Clocks

(2013) Christian Hagemann et al.   IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT

A Quantum Many-Body Spin System in an Optical Lattice Clock

(2013) M. J. Martin et al.   SCIENCE

An Atomic Clock with 10-18 Instability

(2013) N. Hinkley et al.   SCIENCE

Ultra-low-phase-noise cryocooled microwave dielectric-sapphire-resonator oscillators

(2012) John G. Hartnett et al.   APPLIED PHYSICS LETTERS

A sub-40-mHz-linewidth laser based on a silicon single-crystal optical cavity

(2012) T. Kessler et al.   Nature Photonics

Comparison of Two Independent Sr Optical Clocks with1×10−17Stability at103  s

(2012) T. L. Nicholson et al.   PHYSICAL REVIEW LETTERS

Ultra-Stable Very-Low Phase-Noise Signal Source for Very Long Baseline Interferometry Using a Cryocooled Sapphire Oscillator

(2011) Nitin R. Nand et al.   IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES

Unprecedented long-term frequency stability with a microwave resonator oscillator

(2011) S. G. Grop et al.   IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL

Thermal noise in optical cavities revisited

(2011) Thomas Kessler et al.   JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

The87Sr optical frequency standard at PTB

(2011) St Falke et al.   METROLOGIA

Adapting a Cryogenic Sapphire Oscillator for Very Long Baseline Interferometry

(2011) Sheperd Doeleman et al.   PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC

Optical Clocks and Relativity

(2010) C. W. Chou et al.   SCIENCE

A narrow linewidth and frequency-stable probe laser source for  the 88Sr+ single ion optical frequency standard

(2009) P. Dubé et al.   APPLIED PHYSICS B-LASERS AND OPTICS

Uncertainty evaluation of the caesium fountain clock PTB-CSF2

(2009) V Gerginov et al.   METROLOGIA

Laboratory Test of the Isotropy of Light Propagation at the10−17Level

(2009) Ch. Eisele et al.   PHYSICAL REVIEW LETTERS