• Advanced Photonics
  • Vol. 3, Issue 1, 016001 (2021)
Tong Cai1、2、3、†, Shiwei Tang4, Bin Zheng1、3、*, Guangming Wang2, Wenye Ji2, Chao Qian1、3, Zuojia Wang1, Erping Li1、3, and Hongsheng Chen1、3、*
Author Affiliations
  • 1Zhejiang University, College of Information Science and Electronic Engineering, Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, China
  • 2Air Force Engineering University, Air and Missile Defend College, Xi’an, China
  • 3Zhejiang University, ZJU-Hangzhou Global Science and Technology Innovation Center, Key Laboratory of Advanced Micro/Nano Electronic Devices and Smart Systems of Zhejiang, Hangzhou, China
  • 4Ningbo University, Department of Physics, Faculty of Science, Ningbo, China
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    Abstract

    Chromatic aberration-free meta-devices (e.g., achromatic meta-devices and abnormal chromatic meta-devices) play an essential role in modern science and technology. However, current efforts suffer the issues of low efficiency, narrow operating band, and limited wavefront manipulation capability. We propose a general strategy to design chromatic aberration-free meta-devices with high-efficiency and ultrabroadband properties, which is realized by satisfying the key criteria of desirable phase dispersion and high reflection amplitudes at the target frequency interval. The phase dispersion is tuned successfully based on a multiresonant Lorentz model, and high reflection is guaranteed by the presence of the metallic ground. As proof of the concept, two microwave meta-devices are designed, fabricated, and experimentally characterized. An achromatic meta-mirror is proposed within 8 to 12 GHz, and another abnormal chromatic meta-mirror can tune the reflection angle as a linear function. Both meta-mirrors exhibit very high efficiencies (85% to 94% in the frequency band). Our findings open a door to realize chromatic aberration-free meta-devices with high efficiency and wideband properties and stimulate the realizations of chromatic aberration-free meta-devices with other functionalities or working at higher frequency.
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    Tong Cai, Shiwei Tang, Bin Zheng, Guangming Wang, Wenye Ji, Chao Qian, Zuojia Wang, Erping Li, Hongsheng Chen. Ultrawideband chromatic aberration-free meta-mirrors[J]. Advanced Photonics, 2021, 3(1): 016001
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    Category: Research Articles
    Received: May. 28, 2020
    Accepted: Nov. 2, 2020
    Published Online: Dec. 15, 2020
    The Author Email: Zheng Bin (zhengbin@zju.edu.cn), Chen Hongsheng (hansomchen@zju.edu.cn)