Planar metalens composed of V-shaped nano-antennas which can realize subwavelength focusing has been fabricated by Focused Ion Beam etching technology. The metalens was completely flat due to the phase manipulation deriving from the different V-shaped nano-antennas aligned in concentric circles. Comparing to conventional curved lens, the as-made metalens was flat and ultrathin (less than thickness of 100 nm) with light weight. Simulation results demonstrated that the focal length can be accurately controlled by changing the arrangement of the nano-antennas.

Date Published: 12 August 2015
PDF: 5 pages
Proc. SPIE 9624, 2015 International Conference on Optical Instruments and Technology: Micro/Nano Photonics and Fabrication, 962404 (12 August 2015); doi: 10.1117/12.2192172

Published in SPIE Proceedings Vol. 9624:
2015 International Conference on Optical Instruments and Technology: Micro/Nano Photonics and Fabrication
Zhiping Zhou; Changhe Zhou; Pavel Cheben, Editor(s)