title: Mode-resolved 10-GHz frequency comb from a femtosecond optical parametric oscillator.
abstract: We report a 10-GHz frequency comb generated by filtering a 333.3-MHz OPO frequency comb with a Fabry-Perot (FP) cavity, which was directly stabilized to the incident fundamental comb. This result is supported by a detailed analysis of the Vernier-effect-induced multiple peaks in the transmitted comb power as the FP cavity spacing is detuned. Modes of the generated 10-GHz comb were clearly resolved by a Fourier transform spectrometer with a spectral resolution of 830 MHz, considerably better than the Nyquist sampling limit. The potentially broad tuning range of this mode-resolved OPO frequency comb opens unique opportunities for precise frequency metrology and high-precision spectroscopy.
authors.forename: Zhaowei
authors.initials: Z
authors.lastname: Zhang
authors.forename: Karolis
authors.initials: K
authors.lastname: Balskus
authors.forename: Richard A
authors.initials: RA
authors.lastname: McCracken
authors.forename: Derryck T
authors.initials: DT
authors.lastname: Reid