Nonlinear interference and tailorable third-harmonic generation from dielectric oligomers

Maxim R. Shcherbakov*, Alexander S. Shorokhov, Dragomir N. Neshev, Ben Hopkins, Isabelle Staude, Elizaveta V. Melik-Gaykazyan, Alexander A. Ezhov, Andrey E. Miroshnichenko, Igal Brener, Andrey A. Fedyanin, Yuri S. Kivshar

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    135 Citations (Scopus)

    Abstract

    It is known that the nonlinear optical properties of photonic nanostructures can be modified substantially due to strong field confinement and optical resonances. In this contribution, we study third-harmonic generation from low-loss subwavelength silicon nanodisks arranged in the form of trimer oligomers with varying distance between the nanoparticles. Each of the nanodisks exhibits both electric and magnetic Mie-type resonances that are shown to affect significantly the nonlinear response. We observe the third-harmonic radiation intensity that is comparable to that of a bulk silicon slab and demonstrate a pronounced reshaping of the third-harmonic spectra due to interference of the nonlinearly generated waves augmented by an interplay between the electric and the magnetic dipolar resonances.

    Original languageEnglish
    Pages (from-to)578-582
    Number of pages5
    JournalACS Photonics
    Volume2
    Issue number5
    DOIs
    Publication statusPublished - 20 May 2015

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