Title :
171Yb+ Single-Ion Optical Frequency Standard at 688 THz
Author :
Tamm, Chr ; Lipphardt, B. ; Schnatz, H. ; Wynands, R. ; Weyers, S. ; Schneider, T. ; Peik, E.
Author_Institution :
Phys.-Technische Bundesanstalt, Braunschweig
fDate :
4/1/2007 12:00:00 AM
Abstract :
Two 171Yb+ single-ion optical frequency standards operating at 688 THz (436 nm) are compared in order to investigate systematic frequency shifts in the subhertz range. In the absence of externally applied perturbations, a mean relative frequency difference of 3.8 10-16 is observed. Using a femtosecond frequency comb generator based on an Er3+-doped fiber laser, the frequency of the 171Yb+ standard is measured with a relative systematic uncertainty of 3.1 10-15 and a statistical uncertainty of 0.6 - 10-15
Keywords :
erbium; fibre lasers; frequency standards; laser cooling; measurement uncertainty; optical variables measurement; ytterbium; 688 THz; 171Yb+ single-ion optical frequency standard; Er3+-doped fiber laser; Yb; femtosecond frequency comb generator; ion traps; optical atomic clocks; optical frequency measurement; relative systematic uncertainty; subhertz range; systematic frequency shifts; Atom optics; Fiber lasers; Frequency conversion; Frequency measurement; Laser transitions; Magnetic field measurement; Measurement standards; Optical frequency conversion; Particle beam optics; Ultrafast optics; Ion traps; optical atomic clocks; optical frequency measurement; ytterbium-171;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2007.891140
