Title :
Frequency measurement of a single barium ion transition with an ammonia laser
Author :
Siemsen, K.J. ; Madej, A.A. ; Sankey, J.D. ; Whitford, B.G. ; Clark, R.F. ; Magerl, G.
Author_Institution :
Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
The 5d 2D3/2-5d 2D5/2 clock transition at 24 THz (12-μm wavelength) of a single, trapped, and laser cooled 138 Ba+ ion was probed by an optically pumped ammonia laser. The clock transition frequency is low enough to be measured against the Cs standard frequency using NRC´s existing phase locked frequency chain. Preliminary results, which are considered promising, are presented
Keywords :
barium; frequency measurement; measurement by laser beam; measurement standards; particle traps; radiation pressure (atoms); 12 micron; 24 THz; 138Ba+ ion; NH3 laser; clock transition; energy level diagram; frequency measurement; frequency standard; laser cooled; optically pumped ammonia laser; trapped ion; Barium; Charge carrier processes; Clocks; Frequency measurement; Laser excitation; Laser transitions; Optical pumping; Particle beam optics; Phase measurement; Pump lasers;
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.1992.270032
