• Infrared and Laser Engineering
  • Vol. 49, Issue 9, 20201035 (2020)
Yueqiang Hu1、2, Xin Li1, Xudong Wang1, Jiajie Lai1, and Huigao Duan1、2
Author Affiliations
  • 1National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
  • 2Advanced Manufacturing Laboratory of Micro-nano Optical Devices, Shenzhen Research Institute, Hunan University, Shenzhen 518000, China
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    DOI: 10.3788/IRLA20201035 Cite this Article
    Yueqiang Hu, Xin Li, Xudong Wang, Jiajie Lai, Huigao Duan. Progress of micro-nano fabrication technologies for optical metasurfaces[J]. Infrared and Laser Engineering, 2020, 49(9): 20201035 Copy Citation Text show less

    Abstract

    The metasurface is composed of carefully arranged sub-wavelength units in a two-dimensional plane, which provides a new paradigm for designing ultra-compact optical elements and shows great potential in miniaturizing optical systems. In less than ten years, metasurfaces have caused extensive concern in multidisciplinary fields due to their advantages of being ultra-light, ultra-thin and capable of manipulating various parameters of light waves to achieve multi-functional integration. However, in the optical band, high-degree-of-freedom, aperiodic, and densely arranged metaunits put forward many extreme parameter requirements for fabrication, such as extremely small size, extremely high precision, high aspect ratio, difficult-to-process materials, cross-scale, etc. This poses a great challenge for metasurfaces from laboratory to practical applications. Here, the principles, characteristics and latest developments for micro-nano fabrication of metasurfaces in recent years were summarized, including small-area direct writing methods, large-area template transfer methods, and some emerging fabrication methods. Finally, the current challenges and future development trends of metasurface fabrication were summarized and prospected.
    Yueqiang Hu, Xin Li, Xudong Wang, Jiajie Lai, Huigao Duan. Progress of micro-nano fabrication technologies for optical metasurfaces[J]. Infrared and Laser Engineering, 2020, 49(9): 20201035
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