Title :
Atomic Frequency Standards and their Impact on the Past, Present and Future of the Second
Author_Institution :
Phys.-Tech. Bundesanstalt, Braunschweig
Abstract :
Due to the rapid progress in optical frequency standards with uncertainties approaching and even surpassing the best present caesium primary standards it is foreseeable, that the second might be redefined in the future. I will present a history of optical frequency standards and discuss the prospects and possible applications of improved clocks.
Keywords :
atomic clocks; frequency standards; measurement uncertainty; atomic frequency standards; caesium primary standards; clocks; optical frequency standards; uncertainties; Atom lasers; Atom optics; Atomic clocks; Frequency; Laser stability; Laser transitions; Laser tuning; Optical interferometry; Optical saturation; Uncertainty;
Conference_Titel :
IEEE/LEOS Summer Topical Meetings, 2007 Digest of the
Conference_Location :
Portland, OR
Print_ISBN :
1-4244-0926-8
Electronic_ISBN :
1099-4742
DOI :
10.1109/LEOSST.2007.4288373
