Absolute frequency measurements of the 2(3)S(1)-> 2(3)P(0,1,2) atomic helium transitions around 1083 nm

Anno: 2004

Autori: Cancio P., Giusfredi G., De Natale P., Hagel G., de Mauro C., Inguscio M.

Affiliazione autori: Istituto Nazionale di Ottica Applicata (INOA), Largo E. Fermi 6, Firenze, I-50125, Italy; European Laboratory for Non-Linear Spectroscopy (LENS) and Dipartimento di Fisica, Universitá di Firenze, Via N. Carrara 1, Sesto Fiorentino, I-50019, Italy

Abstract: We measure the frequency of the 23S1-23P0,1,2 transitions of helium in a metastable beam using an optical frequency comb synthesizer. The relative uncertainty of these measurements ranging from 5×10-11 to 7×10-12 is, to our knowledge, the most precise result for any optical helium transition. Considering existing accurate values of the 23P fine structure, we measure a centroid value of the 23S-23P frequency of 276 736 495 624.6(2.4) kHz, improving the previous interferometric measurement by 30 times. New accurate values of the 23S-23P and 23P Lamb-shift energies are obtained.

Giornale/Rivista: PHYSICAL REVIEW LETTERS

Volume: 92 (2)      Da Pagina: 023001-1  A: 023001-4

Parole chiavi: Helium; metrology; fine-structure constant
DOI: 10.1103/PhysRevLett.92.023001

Citazioni: 93
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-21
Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
Link per visualizzare la scheda su IsiWeb: Clicca qui
Link per visualizzare la citazioni su IsiWeb: Clicca qui