Two-photon spectroscopy in potassium

Citation
Yw. Liu et Peg. Baird, Two-photon spectroscopy in potassium, MEAS SCI T, 12(6), 2001, pp. 740-743
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
MEASUREMENT SCIENCE & TECHNOLOGY
ISSN journal
0957-0233 → ACNP
Volume
12
Issue
6
Year of publication
2001
Pages
740 - 743
Database
ISI
SICI code
0957-0233(200106)12:6<740:TSIP>2.0.ZU;2-Z
Abstract
The two-photon transitions 4S(1/2) --> 6S(1/2) and 4S(1/2) --> 4D(5/2) in a tomic 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 ob served signal to noise ratios for the S-S and S-D transitions were respecti vely >200 and similar to3, The laser excitation frequencies are located in the near vicinity of 1/6 of the 1S-2S transition interval of hydrogen, deut erium and the hydrogen-like atom, muonium. These potassium transitions may therefore provide a suitable frequency transfer standard for all these syst ems and a useful link between them.