| Zugriffsnummer | 13804 |
| Dokumenttyp | Buchartikel |
| Sprache | Englisch |
| Titel | Optical frequency standards based on neutral atoms and molecules : dedicated to K. Dorenwendt on the occasion of his retirement |
| Autor(in); Institution |
Riehle, Fritz; 4, Optik, PTB-Braunschweig
Helmcke, Jürgen; 4.3, Länge und Zeit, PTB-Braunschweig
|
| Quelle/Jahr | Frequency measurement and control : advanced techniques and future trends:(2001), 95 - 129 |
| Schriftenreihe | Topics in applied physics: 79 |
| Herausgeber(in) |
Luiten, Andre N.
|
| ISBN | 3-540-67694-5 |
| Verlag | Berlin [u.a.]: Springer |
| Zusammenfassung | The current status and prospects of optical frequency standards based on neutral atomic and molecular absorbers are reviewed. Special attention is given to an optical frequency standard based on cold Ca atoms which are interrogated with a pulsed excitation scheme leading to resolved line structures with a quality factor Q ) 1012. The optical frequency was measured by comparison with PTB'S primary clock to be υCa = 455 986 240 494.13 kHz with a total relative uncertainty of 2.5 x 10-13. After a recent recommendation of the International Committee of Weights and Measures (CIPM), this frequency standard now presents one of the most accurate realizations of the length unit. |
Zitierung
Riehle, F. & Helmcke, J. (2001). Optical frequency standards based on neutral atoms and molecules : dedicated to K. Dorenwendt on the occasion of his retirement. In A. N. Luiten (Ed.), Frequency measurement and control : advanced techniques and future trends (pp. 95–129). Berlin [u.a.]: Springer.