97 citations · 168 across the 5 of their papers we have counts for
7 papers
Optical frequency synthesis and measurement using fibre-based femtosecond lasers
Gesine Grosche, Burghard Lipphardt, Harald Schnatz
We report the synthesis and measurement of an ultra-precise and extremely stable optical frequency in the telecommunications window around 1543 nm. Using a fibre-based femtosecond…
The stability of an optical clock laser transferred to the interrogation oscillator for a Cs fountain
B. Lipphardt, G. Grosche, U. Sterr +3
We stabilise a microwave oscillator at 9.6 GHz to an optical clock laser at 344 THz by using a fibre-based femtosecond laser frequency comb as a transfer oscillator. With a second…
Absolute frequency measurement of the magnesium intercombination transition
Jan Friebe, André Pape, Matthias Riedmann +9
We report on a frequency measurement of the clock transition of Mg on a thermal atomic beam. The intercombination transition has been referenced…
An Optical Lattice Clock with Spin-polarized 87Sr Atoms
Xavier Baillard, Mathilde Fouché, Rodolphe Le Targat +14
We present a new evaluation of an 87Sr optical lattice clock using spin polarized atoms. The frequency of the 1S0-3P0 clock transition is found to be 429 228 004 229 873.6 Hz with…
Frequency comparisons and absolute frequency measurements of 171Yb+ single-ion optical frequency standards
E. Peik, B. Lipphardt, H. Schnatz +3
We describe experiments with an optical frequency standard based on a laser cooled Yb ion confined in a radiofrequency Paul trap. The electric-quadrupole transition fro…
The optical calcium frequency standards of PTB and NIST
U. Sterr, C. Degenhardt, H. Stoehr +7
We describe the current status of the Ca optical frequency standards with laser-cooled neutral atoms realized in two different laboratories for the purpose of developing a possible…