Title :
Frequency measurement of the 2S-12D transitions in hydrogen and deuterium, new determination of the Rydberg constant
Author :
Schwob, C. ; Jozefowski, L. ; Acef, O. ; Hilico, L. ; de Beauvoir, B. ; Nez, F. ; Julien, L. ; Clairon, A. ; Biraben, F.
Author_Institution :
Lab. Kastler-Brossel, Univ. Pierre et Marie Curie, Paris, France
fDate :
4/1/1999 12:00:00 AM
Abstract :
We have performed the first pure frequency measurement of the 2S-12D two-photon transitions in atomic hydrogen and deuterium. These frequencies are compared to two optical standards, the CO2 laser stabilized on the OsO4 molecule and the optical rubidium laser standard (LD/Rb) (namely, a laser diode at 778 nm stabilized on the 5S1/2-5D5/2 two-photon transition of rubidium). The main part of the experiment is located in the Laboratoire Kastler-Brossel (LKB), one part of the frequency chain is in the Laboratoire Primaire du Temps et des Frequences (LPTF), and two 3 km long optical fibers link the two parts of this experiment. The new value of the Rydberg constant is R∞=109 737.315 686 06 (79) cm-1
Keywords :
constants; deuterium; frequency measurement; hydrogen neutral atoms; two-photon processes; 2S-12D two-photon transition; D; H; Rydberg constant; atomic deuterium; atomic hydrogen; frequency measurement; optical fiber; optical standard; Atom optics; Atomic beams; Atomic measurements; Deuterium; Diode lasers; Frequency measurement; Hydrogen; Laser stability; Laser transitions; Performance evaluation;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
