A high-quality factor hybrid plasmonic nanocavity based on distributed Bragg reflectors |
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| Institution: | 1. School of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
2. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China;
3. School of Physics, University of Western Australia, Perth WA 6009, Australia |
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| Abstract: | 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. |
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| Keywords: | plasmonic nanocavity photonic crystal nanowire |
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