科研成果 by Year: 2019

2019
Brightening and Guiding Single-Photon Emission by Plasmonic Waveguide–Slit Structures on a Metallic Substrate
Zhang, G., Jia, S., Gu, Y. & Chen*, J. Brightening and Guiding Single-Photon Emission by Plasmonic Waveguide–Slit Structures on a Metallic Substrate. Laser & Photonics Reviews 13, 1900025 (2019). 访问链接Abstract
Abstract By designing a plasmonic waveguide–slit structure (a nanoslit etched in a silver nanowire) on a silver substrate, an ultrahigh Purcell factor and ultralarge figure of merit (FOM) are numerically predicted. Because of the large field enhancement (>150 times the incident field) and the ultrasmall optical volume (V ≈ 2 × 10−5λ3) of the resonant mode in the metallic nanoslit, the simulations show that the Purcell factor in the system can reach up to FP = 1.68 × 105, which is more than ten times the maximum Purcell factor in previous work (by placing metallic nanoparticles on a metal surface with a nanogap). Because of the utilization of a silver substrate rather than the common dielectric substrate, the mode cutoff of the surface plasmon polariton (SPP) waveguide mode is completely eliminated, which provides a large selection range of the nanowire radii to support the resonant mode in the nanoslit. Moreover, the SPP propagation length is significantly increased by more than 30 times. As a result, an ultralarge FOM of 1.40 × 107 is obtained, which is more than 80 times the maximum FOM in previous work where the metallic nanowire is placed on or surrounded by dielectric materials.
Pattern-assisted stacking colloidal quantum dots for photonic integrated circuits
Rong, K., Liu, H., Shi, K. & Chen*, J. Pattern-assisted stacking colloidal quantum dots for photonic integrated circuits. Nanoscale 11, 13885–13893 (2019). 访问链接
Colloidal quantum dot lasers and hybrid integrations
Chen*, J. Colloidal quantum dot lasers and hybrid integrations. Journal of Semiconductors 40, 050401 (2019).
Tailoring the emission polarization with metasurface-based emitters designed on a plasmonic ridge waveguide
Gan, F., Li, H. & Chen*, J. Tailoring the emission polarization with metasurface-based emitters designed on a plasmonic ridge waveguide. Nanoscale 11, 7140–7148 (2019). 访问链接