Optimization-free approach for broadband achromatic metalens of high-numerical-aperture with high-index dielectric metasurface

Broadband achromatic metalenses are highly desirable for realistic applications in focusing and imaging. In this paper, a group of dielectric double-strip meta-atoms of high-index are proposed to achieve a large range of group delay in a broadband near-infrared range. And an optimization-free method...

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Veröffentlicht in:	Journal of physics. D, Applied physics Applied physics, 2019-12, Vol.52 (50), p.505110
Hauptverfasser:	Zhao, Fen, Jiang, Xue, Li, Sheng, Chen, Hao, Liang, Gaofeng, Wen, Zhongquan, Zhang, Zhihai, Chen, Gang
Format:	Artikel
Sprache:	eng
Schlagworte:	achromatic metalenses high-index metasurfaces high-numerical-aperture
Online-Zugang:	Volltext
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