Nonlocality-Broaden Optical Bistability in a Nonlinear Plasmonic Core–Shell Cylinder
| Autor: | Lei Gao, Yang Huang, Ya Min Wu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed matter physics Bistability Scattering Physics::Optics 02 engineering and technology Parameter space 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Optical bistability Nonlinear system Quantum nonlocality Wavelength General Energy Quantum mechanics 0103 physical sciences Scattering theory Physical and Theoretical Chemistry 010306 general physics 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 121:8952-8960 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.6b12546 |
| Popis: | With the self-consistent mean-field method in the framework of full-wave nonlocal scattering theory, we theoretically investigate the optical bistability in a nonlocal metallic nanocylinder coated with Kerr-type nonlinear shell. A nonlocality enhanced Fano profile is found for this coated cylinder in the linear limit. We illustrate the relation between the linear plasmonic resonant wavelength and the viable parameters for optical bistability in parameter space. It is found that nonlocality will lead to impressive blue shift of the resonant wavelength, and hence dramatically increase the bistable region in the parameter space of incident wavelength and geometrical factor. We demonstrate the input-field-controllable and input-wavelength-controllable scatterings in the nonlinear case, respectively. It indicates that nonlocal effects show opposite influences on these two nonlinear scattering processes, and the bistability in the scattering spectrum is weaken by nonlocality. Our study reveals that these self-t... |
| Databáze: | OpenAIRE |
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