Title :
New measurement of the 2S hyperfine splitting in atomic hydrogen
Author :
Matveev, A. ; Alnis, J. ; Parthey, C. ; Kolachevsky, N. ; Hansch, Theodor W.
Author_Institution :
MPI fur Quantenopt., Garching, Germany
Abstract :
Recent advances in laser stabilization, optical frequency measurements and preparation of cold atomic samples open possibility to compare optical frequencies to the 17th decimal place which overcomes the accuracy of the best Cs fountain clocks defining the SI second. Besides this impressive result there exist many other examples when spectroscopy in the optical domain allows for more accurate measurements than classical radio-frequency techniques.
Keywords :
hydrogen neutral atoms; hyperfine structure; 2S hyperfine splitting; H; cold atomic samples; laser stabilization; optical frequency measurement; Atom lasers; Atom optics; Atomic beams; Atomic measurements; Clocks; Frequency measurement; Hydrogen; Laser stability; Radio frequency; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5196294
