Towards a Low-Jitter 10 GHz Pulsed Source with an Optical Frequency Comb Generator
Shijun Xiao, Leo W. Hollberg, Nathan R. Newbury, Scott A. Diddams
We demonstrate low residual timing jitter of 10 GHz pulses from a 1.55 m optical frequency comb generator based on a doubly-resonant electro-optic modulator. The comb spectral phase is shown to be linear for each sideband but of different slopes. The linear phase delay predicts well the measured timing delay of the two pulse trains from the comb generator. The pulse timing jitter is analyzed, and we illustrate that the pump laser s linewidth plays a dominant role in the timing jitter. For Fourier frequencies from 1 Hz to 10 MHz, integrated residual phase jitter was reduced from ~ 94 fs to ~ 8 fs when the pump laser s linewidth was reduced from ~ 1 MHz and ~ 1 KHz. An electronic servo was then used to stabilize the Fabry-Pérot cavity in the comb generator, integrated residual phase jitter was further reduced to ~ 6 fs, and the corresponding residual phase noise power density is -105 dBc/Hz at 1 Hz frequency offset from the 10 GHz pulse carrier.
metrology instrumentation, metrology, pulses and picosecond phenomena
, Hollberg, L.
, Newbury, N.
and Diddams, S.
Towards a Low-Jitter 10 GHz Pulsed Source with an Optical Frequency Comb Generator, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=842432
(Accessed November 29, 2023)