Abstract
Optical third-harmonic generation (THG) is important for various applications in nanomedicine, photocatalysis, and biosensing, but advances are held back due to small third-order nonlinear susceptibility ${\ensuremath{\chi}}^{(3)}$ and phase mismatch between the fundamental and third-harmonic waves. This work uses a graphene plasmonic coupler to achieve tunable, highly efficient THG through combining phase matching with resonant three-photon transitions. The study not only offers understanding and guidance for the problem at hand, but also points to further exploration of tunable, subwavelength coherent sources and ultracompact signal processing in the midinfrared and terahertz spectral regimes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.