Integrated resonant units of metasurface for broadband efficiency and phase modulation

Ren Jie Lin, Hui Hsin Hsiao, Yu Han Chen, Bo Han Chen, Pin Chieh Wu, Yi Chieh Lai, Shuming Wang, Din Ping Tsai

研究成果: Conference contribution

摘要

The beauty of metasurfaces lies on their capability for controlling the amplitude, phase, and polarization response with subwavelength resolution via spatially-varying nano-scatterers. With the incorporation of multiple elements or multiple resonances of nano-resonators into metasurfaces, these integrated-resonant units (IRUs) provide additional degree of freedom to manipulate the multispectral optical property of scattering light over a continuous and broad bandwidth, which is especially essential for eliminating the chromatic effect that requires smooth and linear phase dispersion. Here, we demonstrated three achromatic meta-lens based on IRUs designs to show constant focal length in the range of 400 to 650 nm. In addition, a broadband versatile polarization generator operating in 400 nm to 1300 nm was demonstrated by using multi-nanorod IRUs as building blocks. The working efficiency of multi-nanorod design is enhanced above 10 times in the near infrared range compared to the optimization case of single nanorod design, demonstrating the capability of IRUs in achieving high conversion efficiency over a broad wavelength range.

原文English
主出版物標題2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(列印)9781943580422
出版狀態Published - 2018 八月 6
事件2018 Conference on Lasers and Electro-Optics, CLEO 2018 - San Jose, United States
持續時間: 2018 五月 132018 五月 18

出版系列

名字2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings

Conference

Conference2018 Conference on Lasers and Electro-Optics, CLEO 2018
國家United States
城市San Jose
期間18-05-1318-05-18

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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