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 :
Univ. Pierre et Marie Curie, Paris, France
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 CO/sub 2/ laser stabilized on the OsO/sub 4/ molecule and the optical rubidium laser standard (LD/Rb) (namely a laser diode at 778 nm stabilized on the 5S/sub 1/2/-5D/sub 5/2/ two-photon transition of rubidium). We have built a frequency chain to connect the hydrogen lines to the frequency standards. The main part of the experiment is located in the LKB laboratory, one part of the frequency chain is in the LPTF laboratory, two optical fibers linked the two parts of this experiment.
Keywords :
Rydberg states; constants; deuterium; frequency standards; hydrogen neutral atoms; laser frequency stability; quantum electrodynamics; two-photon processes; 2S-12D two-photon transitions; 778 nm; CO/sub 2/; CO/sub 2/ laser stabilized on OsO/sub 4/; D; H; OsO/sub 4/; Rb; Rydberg constant; Stark corrections; frequency chain; frequency standards; optical fibers; optical rubidium laser standard; optical standards; pure frequency measurement; Atom optics; Atomic beams; Atomic measurements; Deuterium; Frequency measurement; Hydrogen; Laboratories; Laser stability; Laser transitions; Performance evaluation;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699730
