Title :
Optical Frequency Standard Based on Ballistic Ca Atoms
Author :
Nazarova, T. ; Degenhardt, C. ; Lisdat, Ch. ; Schnatz, H. ; Sterr, U. ; Riehle, F.
Author_Institution :
Phys.-Technische Bundesanstalt, Braunschweig
Abstract :
The authors report on the current status of an optical frequency standard based on a laser cooled ensemble of free 40Ca atoms realized at PTB. It is shown how the achieved fractional uncertainty and instability of 1.2 times 10-14 and sigma (tau = 1 s) = 2 times 10-14 can be improved to below 10-15 and sigma(tau = 1 s) les 10-15, respectively
Keywords :
atom optics; calcium; laser cooling; optical frequency conversion; PTB; ballistic calcium atoms; fractional uncertainty; laser cooled ensemble; optical frequency standard; Atom lasers; Atom optics; Atomic beams; Atomic measurements; Charge carrier processes; Clocks; Frequency; Optical interferometry; Particle beam optics; Ultrafast optics;
Conference_Titel :
International Frequency Control Symposium and Exposition, 2006 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0074-0
Electronic_ISBN :
1-4244-0074-0
DOI :
10.1109/FREQ.2006.275369
