A high-quality factor hybrid plasmonic nanocavity based on distributed Bragg reflectors

L. Tu, C. Zhang, Jason Yau, P. Zhan, Z. Wang, Zhong Huang

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    © 2016 Chinese Physical Society and IOP Publishing Ltd.Herein, we propose a high-quality (Q) factor hybrid plasmonic nanocavity based on distributed Bragg reflectors (DBRs) with low propagation loss and extremely strong mode confinement. This hybrid plasmonic nanocavity is composed of a high-index cylindrical nanowire separated from a metal surface possessing shallow DBRs gratings by a sufficiently thin low-index dielectric layer. The hybrid plasmonic nanocavity possesses advantages such as a high Purcell factor (Fp) of up to nearly 20000 and a gain threshold approaching 266 cm-1 at 1550 nm, promising a greater potential in deep sub-wavelength lasing applications.
    Original languageEnglish
    JournalChinese Physics B
    Volume25
    Issue number9
    DOIs
    Publication statusPublished - 2016

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