| Zugriffsnummer | 43367 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Phase noise of frequency doublers in optical clock lasers |
| Autor(in); Institution |
Herbers, Sofia; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Dörscher, Sören; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Benkler, Erik; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Lisdat, Christian; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
|
| Quelle/Jahr | Optics Express: 27 (2019), 16, 23262 - 23273 |
| Availability | [online only] |
| ISSN | 1094-4087 |
| DOI | |
| Verlag | Washington, DC: Optical Society of America (OSA) |
| Freie Schlagworte | optical clocks ; geodesy |
| Zusammenfassung | Frequency doublers are widely used in high-resolution spectroscopy to shift the operation wavelength of a laser to a more easily accessible or otherwise preferable spectral region. We investigate the use of a periodically-poled lithium niobate (PPLN) waveguide frequency doubler in an optical clock. We focus on the phase evolution between the fundamental (1396 nm) and frequency-doubled (698 nm) light and its effect on clock performance. We find that the excess phase noise of the doubler under steady-state operation is at least two orders of Magnitude lower than the noise of today’s best interrogation lasers. Phase chirps related to changes of the optical power in the doubler unit and their influence on the accuracy of optical clocks are evaluated. We also observe substantial additional noise when characterizing the doubler unit with an optical frequency comb instead of using two identical waveguide doublers. |
| Kostenfreier Zugang | Open Access Gold |
| Themenbereich der Metrologie | Zeit und Frequenz |
| Förderinformationen (1) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: CRC 1128 project A03 ; CRC 1227 project B02 ; EXC-2123/1 |
| Förderinformationen (2) |
Förderername: European Space Agency (ESA)
Förderer ID: 0000 0004 0623 6946 Förderer ID Typ: ISNI Förderungsnummer: 4000119716 |