摘要
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.
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.
基金
Project supported by the National Key Basic Research Special Foundation of China(Grant Nos.2012CB921501 and 2013CB632703)
the National Natural Science Foundation of China(Grant Nos.11274160,91221206,and 51271092)
