Absolute frequency measurement of the 1S0-3P0 transition of 171Yb with a link to international atomic time
Abstract
We report the absolute frequency measurement of the unperturbed optical clock transition 1S0-3P0 in 171Yb performed with an optical lattice frequency standard. Traceability to the International System of Units is provided by a link to International Atomic Time. The measurement result is 518 295 836 590 863.61(13) Hz with a relative standard uncertainty of , obtained operating our 171Yb optical frequency standard intermittently for 5 months. The 171Yb optical frequency standard contributes with a systematic uncertainty of .
- Publication:
-
Metrologia
- Pub Date:
- June 2020
- DOI:
- 10.1088/1681-7575/ab50e8
- Bibcode:
- 2020Metro..57c5007P
- Keywords:
-
- optical frequency standards;
- international atomic time;
- frequency metrology