Title :
Two different atomic oscillators in the same environment: a new technique for compensating perturbations
Author :
Seidel, D.J. ; Yei, Wo ; Maleki, L.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Presents a new technique for compensating frequency drift in a trapped ion frequency standard by simultaneously holding 171Yb+ and 199Hg+. Environmental perturbations affect the hyperfine splitting of these two ions very differently. By monitoring the changes in the frequency difference between their hyperfine levels we can compensate for some of the frequency drift due to changes in external perturbations
Keywords :
atomic clocks; compensation; frequency measurement; frequency stability; hyperfine structure; measurement standards; mercury (metal); microwave measurement; trapped ions; ytterbium; Hg; Yb; atomic oscillators; external perturbations; frequency difference; frequency drift; hyperfine splitting; perturbation compensation; trapped ion frequency standard; Doppler shift; Electrons; Frequency measurement; Isotopes; Laboratories; Magnetic field measurement; Monitoring; Oscillators; Propulsion; Ytterbium;
Conference_Titel :
Frequency Control Symposium, 1996. 50th., Proceedings of the 1996 IEEE International.
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-3309-8
DOI :
10.1109/FREQ.1996.560317
