Second-harmonic-assisted four-wave mixing in chip-based microresonator frequency comb generation.

ABSTRACT: Simultaneous Kerr comb formation and second-harmonic generation with on-chip microresonators can greatly facilitate comb self-referencing for optical clocks and frequency metrology. Moreover, the presence of both second- and third-order nonlinearities results in complex cavity dynamics that is of high scientific interest but is still far from being well-understood. Here, we demonstrate that the interaction between the fundamental and the second-harmonic waves can provide an entirely new way of phase matching for four-wave mixing in optical microresonators, enabling the generation of optical frequency combs in the normal dispersion regime under conditions where comb creation is ordinarily prohibited. We derive new coupled time-domain mean-field equations and obtain simulation results showin

SUBMITTER: Xue X 

PROVIDER: S-EPMC6062166 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature