Title :
Cs-referenced optical frequency measurement of the single, trapped Sr+ ion standard at 445 THz
Author :
Bernard, J.E. ; Madej, A.A. ; Marmet, L. ; Siemsen, K.J. ; Whitford, B.G.
Author_Institution :
Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
The frequency of the electric quadrupole allowed 5s2S 1/2-4d2D5/2 transition at 445 THz in a single, trapped and laser cooled 88Sr+ ion has been measured with an optical frequency chain referenced to a Cs atomic clock. A transition frequency of fS-D=444 779 044 095.4 kHz with an estimated standard uncertainty of 0.2 kHz has been determined. The intrinsic offsets of the measured ion transition frequency due to environmental perturbations have been calculated to be at the 10-15 level
Keywords :
atom-photon collisions; atomic clocks; frequency standards; laser cooling; optical variables measurement; particle traps; positive ions; quantum optics; radiation pressure; strontium; trapped ions; visible spectra; 445 THz; 5s2S1/2-4d2D5/2 transition; Cs; Cs atomic clock; Cs-referenced optical frequency measurement; Sr; Sr+; electric quadrupole allowed transition; environmental perturbations; intrinsic offsets; ion transition frequency; laser cooled ion; optical frequency chain; single trapped ion standard; standard uncertainty; transition frequency; trapped ion; Atom lasers; Atom optics; Atomic measurements; Charge carrier processes; Electric variables measurement; Frequency estimation; Frequency measurement; Laser transitions; Particle beam optics; Strontium;
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.1999.841406
