Sub-wavelength focusing meta-lens
We show that a planar plasmonic metamaterial with spatially variable meta-atom parameters can focus transmitted light into subwavelength hot-spots located beyond the near-field of the metamaterial. By nano-structuring a gold film we created an array of meta-lenses generating foci of 160 nm (0.2λ) in...
Saved in:
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
|
| Online Access: | https://hdl.handle.net/10356/97544 http://hdl.handle.net/10220/11846 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| id |
sg-ntu-dr.10356-97544 |
|---|---|
| record_format |
dspace |
| spelling |
sg-ntu-dr.10356-975442023-02-28T19:40:53Z Sub-wavelength focusing meta-lens Roy, Tapashree Rogers, Edward T. F. Zheludev, Nikolay I. School of Physical and Mathematical Sciences We show that a planar plasmonic metamaterial with spatially variable meta-atom parameters can focus transmitted light into subwavelength hot-spots located beyond the near-field of the metamaterial. By nano-structuring a gold film we created an array of meta-lenses generating foci of 160 nm (0.2λ) in diameter when illuminated by a wavelength of 800 nm. We attribute the occurrence of sub-wavelength hotspots beyond the near field to the phenomenon of superoscillation. Published version 2013-07-18T03:36:14Z 2019-12-06T19:43:47Z 2013-07-18T03:36:14Z 2019-12-06T19:43:47Z 2013 2013 Journal Article Roy, T., Rogers, E. T. F., & Zheludev, N. I. (2013). Sub-wavelength focusing meta-lens. Optics Express, 21(6), 7577-7582. 1094-4087 https://hdl.handle.net/10356/97544 http://hdl.handle.net/10220/11846 10.1364/OE.21.007577 en Optics express © 2013 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/OE.21.007577]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| institution |
Nanyang Technological University |
| building |
NTU Library |
| continent |
Asia |
| country |
Singapore Singapore |
| content_provider |
NTU Library |
| collection |
DR-NTU |
| language |
English |
| description |
We show that a planar plasmonic metamaterial with spatially variable meta-atom parameters can focus transmitted light into subwavelength hot-spots located beyond the near-field of the metamaterial. By nano-structuring a gold film we created an array of meta-lenses generating foci of 160 nm (0.2λ) in diameter when illuminated by a wavelength of 800 nm. We attribute the occurrence of sub-wavelength hotspots beyond the near field to the phenomenon of superoscillation. |
| author2 |
School of Physical and Mathematical Sciences |
| author_facet |
School of Physical and Mathematical Sciences Roy, Tapashree Rogers, Edward T. F. Zheludev, Nikolay I. |
| format |
Article |
| author |
Roy, Tapashree Rogers, Edward T. F. Zheludev, Nikolay I. |
| spellingShingle |
Roy, Tapashree Rogers, Edward T. F. Zheludev, Nikolay I. Sub-wavelength focusing meta-lens |
| author_sort |
Roy, Tapashree |
| title |
Sub-wavelength focusing meta-lens |
| title_short |
Sub-wavelength focusing meta-lens |
| title_full |
Sub-wavelength focusing meta-lens |
| title_fullStr |
Sub-wavelength focusing meta-lens |
| title_full_unstemmed |
Sub-wavelength focusing meta-lens |
| title_sort |
sub-wavelength focusing meta-lens |
| publishDate |
2013 |
| url |
https://hdl.handle.net/10356/97544 http://hdl.handle.net/10220/11846 |
| _version_ |
1759852940536840192 |