154 citations · 832 across the 16 of their papers we have counts for
5 papers · 1 filter
Direct comparisons of European primary and secondary frequency standards via satellite techniques
F. Riedel, A. Al-Masoudi, E. Benkler +46
We carried out a 26-day comparison of five simultaneously operated optical clocks and six atomic fountain clocks located at INRIM, LNE-SYRTE, NPL and PTB by using two satellite-bas…
End-to-end topology for fiber comb based optical frequency transfer at the level
Erik Benkler, Burghard Lipphardt, Thomas Puppe +3
We introduce a simple and robust scheme for optical frequency transfer of an ultra-stable source light field via an optical frequency comb to a field at a target optical frequency,…
Search for transient variations of the fine structure constant and dark matter using fiber-linked optical atomic clocks
B. M. Roberts, P. Delva, A. Al-Masoudi +51
We search for transient variations of the fine structure constant using data from a European network of fiber-linked optical atomic clocks. By searching for coherent variations in…
Guidelines for developing optical clocks with fractional frequency uncertainty
Moustafa Abdel-Hafiz, Piotr Ablewski, Ali Al-Masoudi +42
There has been tremendous progress in the performance of optical frequency standards since the first proposals to carry out precision spectroscopy on trapped, single ions in the 19…
946-nm Nd:YAG digital-locked laser at in 1 s and transfer-locked to a cryogenic silicon cavity
A. Didier, S. Ignatovich, E. Benkler +2
We present a Nd:YAG ultra-stable laser system operating at 946 nm and demonstrate a fractional frequency instability of at 1 s by pre-stabilizing it to a 30 cm-…