Optical bistability in a nonlinear shell coated metallic nanoparticle
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...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/83889 http://hdl.handle.net/10220/42856 |
| _version_ | 1811695409594105856 |
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| author | Gao, Lei Chen, Hongli Zhang, Youming Zhang, Baile |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Gao, Lei Chen, Hongli Zhang, Youming Zhang, Baile |
| author_sort | Gao, Lei |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T07:23:01Z |
| format | Journal Article |
| id | ntu-10356/83889 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:23:01Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/838892023-02-28T19:38:28Z Optical bistability in a nonlinear shell coated metallic nanoparticle Gao, Lei Chen, Hongli Zhang, Youming Zhang, Baile School of Physical and Mathematical Sciences Metamaterials Nonlinear Optics 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. MOE (Min. of Education, S’pore) Published version 2017-07-13T08:05:30Z 2019-12-06T15:33:58Z 2017-07-13T08:05:30Z 2019-12-06T15:33:58Z 2016 Journal Article Chen, H., Zhang, Y., Zhang, B., & Gao, L. (2016). Optical bistability in a nonlinear-shell-coated metallic nanoparticle. Scientific Report, 6, 21741-. 2045-2322 https://hdl.handle.net/10356/83889 http://hdl.handle.net/10220/42856 10.1038/srep21741 26907967 en Scientific Reports © 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/ 10 p. application/pdf |
| spellingShingle | Metamaterials Nonlinear Optics Gao, Lei Chen, Hongli Zhang, Youming Zhang, Baile Optical bistability in a nonlinear shell coated metallic nanoparticle |
| title | Optical bistability in a nonlinear shell coated metallic nanoparticle |
| title_full | Optical bistability in a nonlinear shell coated metallic nanoparticle |
| title_fullStr | Optical bistability in a nonlinear shell coated metallic nanoparticle |
| title_full_unstemmed | Optical bistability in a nonlinear shell coated metallic nanoparticle |
| title_short | Optical bistability in a nonlinear shell coated metallic nanoparticle |
| title_sort | optical bistability in a nonlinear shell coated metallic nanoparticle |
| topic | Metamaterials Nonlinear Optics |
| url | https://hdl.handle.net/10356/83889 http://hdl.handle.net/10220/42856 |
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