Near-field enhancement of optical second harmonic generation in hybrid gold–lithium niobate nanostructures

ABSTRACT: Nanophotonics research has focused recently on the ability of nonlinear optical processes to mediate and transform optical signals in a myriad of novel devices, including optical modulators, transducers, color filters, photodetectors, photon sources, and ultrafast optical switches. The inherent weakness of optical nonlinearities at smaller scales has, however, hindered the realization of efficient miniaturized devices, and strategies for enhancing both device efficiencies and synthesis throughput via nanoengineering remain limited. Here, we demonstrate a novel mechanism by which second harmonic generation, a prototypical nonlinear optical phenomenon, from individual lithium niobate particles can be significantly enhanced through nonradiative coupling to the localized surface plasmon resona

SUBMITTER: Ali R 

PROVIDER: S-EPMC10130160 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature