Title :
Accuracy evaluations and frequency comparison of NIST-7 and CRL-O1
Author :
Lee, W.D. ; Drullinger, R.E. ; Shirley, J.H. ; Nelson, C. ; Jennings, D.A. ; Mullen, L.O. ; Walls, F.L. ; Parker, T.E. ; Hasegawa, A. ; Fukuda, K. ; Kotake, N. ; Kajita, M. ; Morikawa, T.
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
CRL and NIST have completed the development of CRL-O1, an improved optically pumped primary frequency standard. The results of the first evaluation of the new standard and its comparison with NIST-7, the US primary frequency standard are presented
Keywords :
atomic clocks; frequency standards; optical pumping; servomechanisms; CRL-O1; NIST-7; US primary frequency standard; accuracy evaluations; digital frequency servo; digital power servo; frequency comparison; optically pumped primary frequency standard; Atom optics; Atomic beams; Atomic measurements; Frequency conversion; NIST; Optical attenuators; Optical pumping; Optical sensors; Semiconductor lasers; Servomechanisms;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840707
