584 citations · 2.1k across the 9 of their papers we have counts for
9 papers
A transportable clock laser system with an instability of
Sofia Herbers, Sebastian Häfner, Sören Dörscher +3
We present a transportable ultra-stable clock laser system based on a Fabry-Pérot cavity with crystalline AlGaAs/GaAs mirror coatings, fused silica (FS) mirror su…
Geodesy and metrology with a transportable optical clock
Jacopo Grotti, Silvio Koller, Stefan Vogt +21
The advent of novel measurement instrumentation can lead to paradigm shifts in scientific research. Optical atomic clocks, due to their unprecedented stability and uncertainty, are…
1.5 m lasers with sub 10 mHz linewidth
D. G. Matei, T. Legero, S. Häfner +8
We report on two ultrastable lasers each stabilized to independent silicon Fabry-Pérot cavities operated at 124 K. The fractional frequency instability of each laser is completely…
A transportable optical lattice clock with uncertainty
S. B. Koller, J. Grotti, St. Vogt +5
We present a transportable optical clock (TOC) with Sr. Its complete characterization against a stationary lattice clock resulted in a systematic uncertainty of ${7.4 \times…
Realization of a time-scale with an accurate optical lattice clock
C. Grebing, A. Al-Masoudi, S. Dörscher +7
Optical clocks are not only powerful tools for prime fundamental research, but are also deemed for the re-definition of the SI base unit second as they now surpass the performance…
Noise and instability of an optical lattice clock
Ali Al-Masoudi, Sören Dörscher, Sebastian Häfner +2
We present an analysis of the different types of noise from the detection and interrogation laser in our strontium lattice clock. We develop a noise model showing that in our setup…
8E-17 fractional laser frequency instability with a long room-temperature cavity
Sebastian Häfner, Stephan Falke, Christian Grebing +5
We present a laser system based on a 48 cm long optical glass resonator. The large size requires a sophisticated thermal control and optimized mounting design. A self balancing mou…
A compact, robust, and transportable ultra-stable laser with a fractional frequency instability of
Qun-Feng Chen, Alexander Nevsky, Marco Cardace +5
We present a compact and robust transportable ultra-stable laser system with minimum fractional frequency instability of at integration times between 1 to 10 s. T…
A strontium lattice clock with inaccuracy and its frequency
Stephan Falke, Nathan Lemke, Christian Grebing +10
We have measured the absolute frequency of the optical lattice clock based on Sr at PTB with an uncertainty of using two caesium fountain clocks. This i…