消色差透镜
光学
波前
平面的
衍射
全息术
波长
物理
干扰(通信)
摄影术
计算机科学
电信
频道(广播)
计算机图形学(图像)
作者
Long Chen,Jia Liu,Xiaohu Zhang,Dongliang Tang
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2020-09-14
卷期号:45 (20): 5772-5772
被引量:22
摘要
Optical super-oscillatory lenses based on planar micro/nano structures have been demonstrated as promising alternatives for shaping wavefronts of light and realizing super-resolution images in a NA-limited optical system. However, as the super-oscillatory foci originated from the delicate interference of the light, the change of the parameters might destroy the hotspots, such as the incident wavelength. Here, a multiwavelength achromatic super-oscillatory metasurface (ASOM) is proposed through simultaneously controlling distinct wavelength-dependent wavefronts. The constructed multiwavelength ASOM is then verified numerically, and the foci are precisely formed at the same axial plane for the design wavelengths with resolution beyond the diffraction limit. We expect that our proposed multiwavelength controllable method will give more freedom for the designs of planar and lightweight components, which would be useful in optical applications, such as data storage, super-resolution imaging, holography, etc.
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