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|Title:||Optical bistability in a nonlinear shell coated metallic nanoparticle||Authors:||Gao, Lei
|Issue Date:||2016||Source:||Chen, H., Zhang, Y., Zhang, B., & Gao, L. (2016). Optical bistability in a nonlinear-shell-coated metallic nanoparticle. Scientific Report, 6, 21741-.||Series/Report no.:||Scientific Reports||Abstract:||We provide a self-consistent mean field approximation in the framework of Mie scattering theory to study the optical bistability of a metallic nanoparticle coated with a nonlinear shell. We demonstrate that the nanoparticle coated with a weakly nonlinear shell exhibits optical bistability in a broad range of incident optical intensity. This optical bistability critically relies on the geometry of the shell-coated nanoparticle, especially the fractional volume of the metallic core. The incident wavelength can also affect the optical bistability. Through an optimization-like process, we find a design with broader bistable region and lower threshold field by adjusting the size of the nonlinear shell, the fractional volume of the metallic core, and the incident wavelength. These results may find potential applications in optical bistable devices such as all-optical switches, optical transistors and optical memories.||URI:||https://hdl.handle.net/10356/83889
|ISSN:||2045-2322||DOI:||10.1038/srep21741||Rights:||© 2016 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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