Title :
A small-linewidth absolute optical frequency source
Author :
Raupach, S.M.F. ; Legero, Thomas ; Bauch, A. ; Grebing, C. ; Hagemann, Ch ; Kessler, T. ; Koczwara, Andreas ; Lipphardt, B. ; Schnatz, H. ; Sterr, Uwe ; Grosche, G.
Author_Institution :
Phys.-Tech. Bundesanstalt (PTB), Braunschweig, Germany
Abstract :
We describe a system that combines a cavity-stabilized laser, a hydrogen maser and a cesium fountain clock. It provides an optical reference frequency that over the course of half a day drifts with less than 100 μHz/s. Furthermore it allows for a convenient measurement of an absolute frequency in the optical domain.
Keywords :
atomic clocks; caesium; frequency standards; laser stability; light sources; optical variables measurement; Cs; cavity stabilized laser; cesium fountain clock; hydrogen maser; optical reference frequency; small linewidth absolute optical frequency source;
Conference_Titel :
European Frequency and Time Forum (EFTF), 2012
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-1924-9
DOI :
10.1109/EFTF.2012.6502423
