| Zugriffsnummer | 49255 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Ultimate stability of active optical frequency standards |
| Autor(in); Institution |
Kazakov, Georgy A.; Atominstitut, TU Wien, Vienna, AUSTRIA
Dubey, Swadheen; Atominstitut, TU Wien, Vienna, AUSTRIA
Bychek, Anna; Institut für Theoretische Physik, Universität Innsbruck, Innsbruck, AUSTRIA
Bober, Marcin; Nicolaus Copernicus University, Institute of Physics, Faculty of Physics, Astronomy and Informatics, POLAND
Zawada, Michal; Nicolaus Copernicus University, Institute of Physics, Faculty of Physics, Astronomy and Informatics, POLAND
|
| Quelle/Jahr | Physical Review A: 106 (2022), 5, 1 - 12 |
| Artikelnummer | 053114 |
| ISSN | 2469-9926 (PRINT) ; 2469-9934 (ONLINE) |
| DOI | |
| URL | |
| Verlag | Woodbury, NY: American Physical Society (APS) |
| Zusammenfassung | Active optical frequency standards provide interesting alternatives to their passive counterparts. Particularly, such a clock alone continuously generates highly stable narrow-line laser radiation. Thus, a local oscillator is not required to keep the optical phase during a dead time between interrogations as in passive clocks, but only to boost the active clock's low output power to practically usable levels with the current state of technology. Here we investigate the spectral properties and the stability of active clocks, including homogeneous and inhomogeneous broadening effects. We find that for short averaging times the stability is limited by photon shot noise from the limited emitted laser power and at long averaging times by phase diffusion of the laser output. Operational parameters for best long-term stability were identified. Using realistic numbers for an active clock with 87Sr, we find that optimized stability of σy(τ)≈4×10-18/√τ[s] is achievable. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |