Title :
Progress toward the development of a ytterbium ion standard
Author :
Seidel, D.J. ; Maleki, L.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A ytterbium ion standard is currently under development at JPL for both ground and space applications. We have chosen the ytterbium ion for its large hyperfine splitting of 12.6 GHz, and accessibility of its first excited electronic energy levels with light from frequency-doubled semiconductor and solid state lasers. Performing microwave-optical double resonance spectroscopy we have achieved 25 mHz Ramsey fringes with a signal-to-noise ratio better than 350:1 in the shot noise limit, which corresponds to an inferred stability on the order of 1.8×10 -14/√(τ)
Keywords :
frequency measurement; frequency stability; hyperfine structure; measurement standards; microwave-optical double resonance; resonant states; spectral line breadth; ytterbium; 12.6 GHz; JPL; Ramsey fringes; Yb; Yb ion standard; Zeeman spectroscopy; ground applications; hyperfine splitting; microwave-optical double resonance spectroscopy; signal-to-noise ratio; space applications; stability; Energy states; Frequency; Laser excitation; Resonance; Semiconductor device noise; Signal to noise ratio; Solid lasers; Spectroscopy; Standards development; Ytterbium;
Conference_Titel :
Frequency Control Symposium, 1994. 48th., Proceedings of the 1994 IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-1945-1
DOI :
10.1109/FREQ.1994.398250
