© 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.
Tu, L., Zhang, C., Yau, J., Zhan, P., Wang, Z., & Huang, Z. (2016). A high-quality factor hybrid plasmonic nanocavity based on distributed Bragg reflectors. Chinese Physics B, 25(9). https://doi.org/10.1088/1674-1056/25/9/097302