Phase-coherent link from optical to microwave frequencies by means of the broadband continuum from a 1-GHz Ti:sapphire femtosecondoscillator.
Ramond TM, Diddams SA, Hollberg L, Bartels A. Phase-coherent link from optical to microwave frequencies by means of the broadband continuum from a 1-GHz Ti:sapphire femtosecondoscillator. Opt Lett. 2002; 27(20):1842-4.