600 citations · 3.4k across the 25 of their papers we have counts for
26 papers
A low repetition rate optical frequency comb
Francesco Canella, Johannes Weitenberg, Muhammad Thariq +6
Reducing the pulse repetition rate of an optical frequency comb increases the pulse energy for a given average power. This enhances the efficiency of nonlinear frequency conversion…
Number-Resolved Detection of Dark Ions in Coulomb Crystals
Fabian Schmid, Johannes Weitenberg, Jorge Moreno +3
While it is straightforward to count laser-cooled trapped ions by fluorescence imaging, detecting the number of dark ions embedded and sympathetically cooled in a mixed ion crystal…
Motional resonances of three-dimensional dual-species Coulomb crystals
Byoung-moo Ann, Fabian Schmid, Jonas Krause +3
We investigate the motional resonances of dual-species Coulomb crystals comprised of Be and Mg ions held in a 4-rod linear Paul trap. Our experimental data and s…
Simple phase noise measurement scheme for cavity-stabilized laser systems
Fabian Schmid, Johannes Weitenberg, Theodor W. Hänsch +2
We describe a simple method for measuring the residual fast phase noise of a cavity-stabilized laser using the cavity as a reference. The method is based on generating a beat note…
Measuring and characterizing the line profile of HARPS with a laser frequency comb
Fei Zhao, G. Lo Curto, L. Pasquini +13
Aims. We study the 2D spectral line profile of HARPS (High Accuracy Radial Velocity Planet Searcher), measuring its variation with position across the detector and with changing li…
The solar gravitational redshift from HARPS-LFC Moon spectra. A test of the General Theory of Relativity
J. I. González Hernández, R. Rebolo, L. Pasquini +15
The General Theory of Relativity predicts the redshift of spectral lines in the solar photosphere, as a consequence of the gravitational potential of the Sun. This effect can be me…