中国物理B ›› 2016, Vol. 25 ›› Issue (9): 97302-097302.doi: 10.1088/1674-1056/25/9/097302
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
Linlin Tu(屠林林), Chi Zhang(张弛), Zhong Huang(黄忠), Jason Yau, Peng Zhan(詹鹏), Zhenlin Wang(王振林)
Linlin Tu(屠林林)1, Chi Zhang(张弛)1, Zhong Huang(黄忠)1, Jason Yau1,3, Peng Zhan(詹鹏)1,2, Zhenlin Wang(王振林)1,2
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.
中图分类号: (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))