Title :
An improved, optically-pumped, primary frequency standard
Author :
Hasegawa, A. ; Fukuda, K. ; Kotake, N. ; Kajita, M. ; Morikawa, T. ; Lee, W.D. ; Nelson, C. ; Jennings, D.A. ; Mullen, L. ; Shiriey, J.H. ; Drullinger, R.
Author_Institution :
Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan
Abstract :
An improved primary frequency standard based on an optically-pumped, thermal, atomic-beam has been jointly developed by CRL and NIST. The design details along with the first evaluation and comparison with NIST´s existing standard are presented.
Keywords :
atomic beams; atomic clocks; caesium; frequency standards; masers; measurement uncertainty; optical pumping; optical saturable absorption; radiation pressure; Cs; Rabi line overlap shifts; Ramsey signal; Zeeman frequency; atomic resonance; cavity pulling; clock operating system; frequency stabilized laser; optically-pumped thermal atomic-beam; primary frequency standard; saturated absorption; uncertainty limit; Atom optics; Atomic beams; Laser noise; NIST; Optical saturation; Optical sensors; Radio frequency; Resonance; Servomechanisms; Standards development;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699846
