Title :
Progress towards an optical frequency chain at NPL
Author :
Lea, S.N. ; Macfarlane, G.M. ; Huang, G. ; Gill, P.
Author_Institution :
Centre for Length Metrol., Nat. Phys. Lab., Teddington, UK
Abstract :
An optical frequency chain is being constructed at NPL with the object of making absolute frequency measurements of optical frequency standards in single, cold, trapped Sr/sup +/ and Yb/sup +/ ions. The initial frequency reference will be a methane-stabilized He-Ne laser system but our ultimate goal is an all-optical chain to the caesium primary microwave frequency standard.
Keywords :
frequency standards; laser cooling; laser frequency stability; optical harmonic generation; optical parametric oscillators; positive ions; radiation pressure; strontium; trapped ions; ytterbium; Cs primary microwave frequency standard; He-Ne; Sr; Sr/sup +/ ions; Yb; Yb/sup +/ ions; absolute frequency measurements; all-optical chain; cascaded frequency doubling; clock transition; frequency multiplication; frequency stability; initial frequency reference; methane-stabilized He-Ne laser; metre realisation; octupole transition; optical frequency chain; optical frequency comb; optical frequency standards; optical parametric oscillator; quadrupole transitions; resonant SHG; single cold trapped ions; Frequency measurement; Laser theory; Laser transitions; Masers; Particle beam optics; Power generation; Power lasers; Quantum cascade lasers; Resonance; Strontium;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700008
