Title :
Stability Measurements of the Ca and Yb Optical Frequency Standards
Author :
Oates, C.W. ; Hoyt, C.W. ; Le Coq, Yann ; Barber, Z.W. ; Fortier, T.M. ; Stalnaker, J.E. ; Diddams, S.A. ; Hollberg, L.
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO
Abstract :
The paper describes two types of optical atomic clocks. The first is based on freely expanding calcium atoms and is optimized for experimental simplicity and high stability. The second is based on Yb atoms confined to an optical lattice that is designed to yield minimal shifts for the clock transition at 578 nm. Measurements of the effective beatnote between the clocks via a femtosecond-laser frequency comb show a fractional frequency instability of <5 times 10-16 @ 100 s averaging time
Keywords :
atomic clocks; calcium; frequency measurement; laser variables measurement; ytterbium; 578 nm; Ca; Yb; effective beatnote; femtosecond-laser frequency comb; optical atomic clocks; optical frequency standards; optical lattice; stability measurements; Atom optics; Atomic clocks; Atomic measurements; Calcium; Frequency measurement; Lattices; Measurement standards; Optical design; Stability; Ultrafast optics;
Conference_Titel :
International Frequency Control Symposium and Exposition, 2006 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0074-0
Electronic_ISBN :
1-4244-0074-0
DOI :
10.1109/FREQ.2006.275355
