Two-photon spectroscopy in potassium
| Autor: | P E G Baird, Yi-Wei Liu |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Measurement Science and Technology. 12:740-743 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/0957-0233/12/6/313 |
| Popis: | The two-photon transitions 4S1/2→6S1/2 and 4S1/2→4D5/2 in atomic potassium have been observed free of the first-order Doppler effect. The rate for the S-D transition, which has been detected for the first time, is two orders of magnitude lower than that for the S-S transition; the observed signal to noise ratios for the S-S and S-D transitions were respectively >200 and ~3. The laser excitation frequencies are located in the near vicinity of 1/6 of the 1S-2S transition interval of hydrogen, deuterium and the hydrogen-like atom, muonium. These potassium transitions may therefore provide a suitable frequency transfer standard for all these systems and a useful link between them. |
| Databáze: | OpenAIRE |
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