Nanophotonic structures are artificial optical substances composed of structures smaller than incident light wavelengths. For example, it can artificially create a unique refractive index that is not found in substances in the natural world. That is, by designing the shape of the nanophotonic structure, an optical filter device that exhibits an optical response on demand can be realized. Also, we can realize applied devices with useful functions that cannot be realized by substances existing in nature, such as antireflective surfaces with 0% reflectance, wavelength‐selective filters with 100% reflectance at specific wavelengths, and filters that shift the resonant wavelength in response to changes in the ambient refractive index. There can be applications to high‐brightness light‐emitting elements, high‐efficiency power generation elements, color filters for full‐color high‐resolution cameras, miniature spectroscopic systems, high‐efficiency biosensors, and so on. In the future, the development of further applications with this technology is widely expected in the fields of information, energy and global environment, and medical care and welfare. This paper describes high‐efficiency optical filters based on nanophotonic technologies. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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基于纳米光子学的高效光学滤光片

纳米光子结构是由小于入射光波长的结构组成的人造光学物质。例如，它可以人为地创建独特的折射率，而这种折射率在自然界的物质中是找不到的。即，通过设计纳米光子结构的形状，可以实现表现出所需的光学响应的​​滤光器装置。而且，我们可以实现具有有用功能的应用设备，而这些功能是自然界中现有物质无法实现的，例如反射率为0％的抗反射表面，特定波长下反射率为100％的波长选择滤光片以及响应时移动谐振波长的滤光片改变环境折射率。可以应用于高亮度发光元件，高效发电元件，用于全彩色高分辨率相机，微型光谱系统，高效生物传感器等的彩色滤光片。将来，人们广泛期望在信息，能源和全球环境以及医疗和福利领域中进一步开发使用该技术的应用程序。本文介绍了基于纳米光子技术的高效光学滤波器。©2021日本电气工程师学会。由Wiley Periodicals LLC发布。本文介绍了基于纳米光子技术的高效光学滤波器。©2021日本电气工程师学会。由Wiley Periodicals LLC发布。本文介绍了基于纳米光子技术的高效光学滤波器。©2021日本电气工程师学会。由Wiley Periodicals LLC发布。