Details

Autor(en) / Beteiligte

• Ndao, Abdoulaye
• Hsu, Liyi
• Ha, Jeongho
• Park, Jun-Hee
• Chang-Hasnain, Connie
• Kanté, Boubacar

Titel

Octave bandwidth photonic fishnet-achromatic-metalens

Ist Teil von

• Nature communications, 2020-06, Vol.11 (1), p.3205-3205, Article 3205

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract Planar structured interfaces, also known as metasurfaces, are continuously attracting interest owing to their ability to manipulate fundamental attributes of light, including angular momentum, phase, or polarization. However, chromatic aberration, limiting broadband operation, has remained a challenge for metasurfaces-based optical components and imagers. The limitation stems from the intrinsic dispersion of existing materials and design principles. Here we report and experimentally demonstrate polarization-independent fishnet-achromatic-metalenses with measured average efficiencies over 70% in the continuous band from the visible (640 nm) to the infrared (1200 nm). Results of the scalable platform are enabling for applications requiring broad bandwidth and high efficiency including energy harvesting, virtual reality and information processing devices, or medical imaging.