Sub-wavelength focusing meta-lens

• Main Authors: Roy, Tapashree, Rogers, Edward T. F., Zheludev, Nikolay I.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/97544; http://hdl.handle.net/10220/11846
• Institution: Nanyang Technological University

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...