Title :
Optical frequency measurements with laser cooled Sr atoms
Author :
Lemonde, P. ; Brusch, A. ; Quessada-Vial, A. ; Le Targat, Rodolphe ; Rovera, G.D. ; Acef, O.
Author_Institution :
BNM-SYRTE, Obs. de Paris
Abstract :
This paper reports the frequency measurement with an accuracy in the 100 kHz range of several optical transitions of atomic Sr. Measurements are performed with a frequency chain based on a femto-second laser and referenced to a hydrogen maser. They allowed the determination with a 70 kHz uncertainty of the energy of the 5s5p 3 Po state and the direct observation and frequency measurement of the doubly forbidden 1S0 rarr3 P0 transition at 698 nm. This line has a natural width of 10 - Hz and can be used for a new generation of optical frequency standards using atoms trapped in a light shift free dipole trap
Keywords :
energy states; frequency standards; laser beam applications; laser cooling; strontium; 100 kHz; Sr; atoms trapped; dipole trap; femto-second laser; hydrogen maser; laser cooled atoms; optical frequency measurements; optical frequency standards; optical transitions; Atom lasers; Atom optics; Atomic beams; Atomic measurements; Charge carrier processes; Frequency measurement; Laser transitions; Performance evaluation; Strontium; Ultrafast optics;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305576
