Offset frequency dynamics and phase noise properties of a self- referenced 10 GHz Ti:sapphire frequency comb
Scott A. Diddams, Dirk Heinecke, Albrecht Bartels
This paper shows the experimental details of the stabilization scheme that allows full control of the repetition rate and the carrier-envelope oﬀset frequency of a 10 GHz frequency comb based on a femtosecond Ti:sapphire laser. Octave-spanning spectra are produced in nonlinear microstructured optical ﬁber, in spite of the reduced peak power associated with the 10 GHz repetition rate. Improved stability of the broadened spectrum is obtained by temperature-stabilization of the nonlinear optical ﬁber. The carrier- envelope oﬀset frequency and the repetition rate are simultaneously frequency stabilized and their short- and long-term stabilities are characterized. We also measure the transfer of amplitude noise of the pump source to phase noise on the oﬀset frequency and verify an increased sensitivity of the oﬀset frequency to pump power modulation compared to lower repetition rate systems. Finally, we discuss merits of this 10 GHz system for the generation of low-phase noise microwaves.
frequency comb, microwave, femtosecond laser, stabilization
, Heinecke, D.
and Bartels, A.
Offset frequency dynamics and phase noise properties of a self- referenced 10 GHz Ti:sapphire frequency comb, Optics Express
(Accessed November 28, 2023)