Title :
Hg+ trapped ion standard performance with the superconducting cavity maser oscillator as LO
Author :
Prestage, J.D. ; Tjoelker, R.L. ; Wang, R.T. ; Dick, G.J. ; Maleki, L.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The frequency stability obtained with an ion-trap-based frequency standard where 199Hg+ ions are confined in a hybrid RF/DC linear trap is described. The 40.5-GHz clock transition is measured to be as narrow as 17 mHz representing a quality factor of 2.4×1012. A hydrogen maser interrogation of a 37-mHz Hg + resonance is used to measure 1×10-15 stability of the ion resonance at 10000-s averaging time. In another measurement the frequency of the superconducting cavity maser oscillator is steered to follow the Hg+ clock transition, again providing frequency stability of 1×10-15 at 10000-s
Keywords :
cavity resonators; frequency measurement; frequency stability; frequency synthesizers; masers; measurement standards; mercury (metal); microwave oscillators; particle traps; radiation pressure (atoms); superconducting microwave devices; 40.5 GHz; 199Hg+ ions; clock transition; hybrid RF/DC linear trap; ion resonance; ion-trap-based frequency standard; local oscillator; superconducting cavity maser oscillator; trapped ion standard performance; Clocks; Frequency measurement; Hydrogen; Masers; Mercury (metals); Q factor; Radio frequency; Resonance; Stability; Time measurement;
Conference_Titel :
Frequency Control Symposium, 1992. 46th., Proceedings of the 1992 IEEE
Conference_Location :
Hershey, PA
Print_ISBN :
0-7803-0476-4
DOI :
10.1109/FREQ.1992.270035
