Plasmonically Enhanced Kerr Frequency Combs

摘要: Optical frequency combs are high repetition rate, broad spectral bandwidth coherent light sources. These devices have numerous applications in many fields, ranging from fundamental science to defense. Recently, low-threshold and small-footprint been demonstrated using ultrahigh quality factor (Q) whispering gallery mode resonant cavities. The majority of research cavity-based has focused on optimizing the Q. An alternative strategy is engineer cavity material enhance underlying nonlinear process for comb generation. In this work, we demonstrate that gold nanorods coated with a reduce generation threshold when decorated surface enhancement mechanism explored finite element method modeling can be explained terms photonic–plasmonic hybridization. A span ∼300 nm near-IR range observed incident intensity <2 GW cm–2. required parametric osci...