Title :
171Yb+ Single-Ion Optical Frequency Standards
Author :
Sherstov, I. ; Tamm, Chr ; Stein, B. ; Lipphardt, B. ; Schnatz, H. ; Wynands, R. ; Weyers, S. ; Schneider, T. ; Peik, E.
Author_Institution :
Phys.-Tech. Bundesanstalt, Braunschweig
fDate :
May 29 2007-June 1 2007
Abstract :
We present work on a frequency standard based on the 2S1/2(F=0, mF=0)rarr2D3/2(F=2, mF=0) electric quadrupole transition in 171Yb+ at 688 THz, and future plans for a frequency standard based on the 2S1/2(F=0, mF=0)rarr2F7/2(F=3, mF=0) electric octupole transition in the same ion at 642 THz. Direct measurement of the ratio of these two frequencies, derived from a single ytterbium ion, constitutes a sensitive test for the temporal constancy of the fine structure constant.
Keywords :
frequency standards; laser cooling; time measurement; ytterbium; electric octupole transition; electric quadrupole transition; single-ion optical frequency standards; temporal constancy; ytterbium ion; Clocks; Frequency conversion; Frequency measurement; Laser modes; Laser noise; Laser stability; Laser transitions; Measurement standards; Optical sensors; Ultrafast optics;
Conference_Titel :
Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International
Conference_Location :
Geneva
Print_ISBN :
978-1-4244-0646-3
Electronic_ISBN :
1075-6787
DOI :
10.1109/FREQ.2007.4319106
