Planar metalens realizing subwavelength focusing

Qian Sun; Qiang Wang; Shuming Wang; Ningjuan Ruan

doi:10.1117/12.2192172

12 August 2015 Planar metalens realizing subwavelength focusing

Qian Sun, Qiang Wang, Shuming Wang, Ningjuan Ruan

Proceedings Volume 9624, 2015 International Conference on Optical Instruments and Technology: Micro/Nano Photonics and Fabrication; 962404 (2015) https://doi.org/10.1117/12.2192172
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

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.

Citation Download Citation

Qian Sun, Qiang Wang, Shuming Wang, and Ningjuan Ruan "Planar metalens realizing subwavelength focusing", Proc. SPIE 9624, 2015 International Conference on Optical Instruments and Technology: Micro/Nano Photonics and Fabrication, 962404 (12 August 2015); https://doi.org/10.1117/12.2192172

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