title: Broadband optical frequency comb generation with a phase-modulated parametric oscillator.
abstract: We introduce a novel broadband optical frequency comb generator consisting of a parametric oscillator with an intracavity electro-optic phase modulator. The parametric oscillator is pumped by 532-nm light and produces near-degenerate signal and idler fields. The modulator generates a comb structure about both the signal and the idler. Coupling between the two families of modes results in a dispersion-limited comb that spans 20 nm (5.3 THz). A signal-to-noise ratio of >30 dB in a 300-kHz bandwidth is observed in the beat frequency between individual comb elements and a reference laser.
authors: S A
authors: SA
authors: Diddams
authors: L S
authors: LS
authors: Ma
authors: J
authors: J
authors: Ye
authors: J L
authors: JL
authors: Hall