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Updated: Apr 17, 2026
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
Dispersion management of anisotropic metamirror for super-octave bandwidth polarization conversion
Yinghui Guo1, Yanqin Wang2, Mingbo Pu2
11] State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of ScienceP.O. Box 350, Chengdu 610209, China [2] Center for Information Photonics &Communications, School of Information Science &Technology, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China.
Abstract:
Dispersion engineering of metamaterials is critical yet not fully released in applications where broadband and multispectral responses are desirable. Here we propose a strategy to circumvent the bandwidth limitation of metamaterials by implementing two-dimensional dispersion engineering in the meta-atoms. Lorentzian resonances are exploited as building blocks in both dimensions of the dedicatedly designed meta-atoms to construct the expected dispersion. We validated this strategy by designing and fabricating an anisotropic metamirror, which can accomplish achromatic polarization transformation in 4-octave bandwidth (two times of previous broadband converters). This work not only paves the way for broadband metamaterials design but also inspire potential applications of dispersion management in nano-photonics.
