Realization of Flattened Structural Luneburg Lens Based on Quasi-Conformal Transformation

2020/04/20 by Liuxian Zhao, Miao Yu, Zhao, Liuxian +1
Engineering · Materials Science · #Advanced Antenna and Metasurface Technologies #Applied Physics (physics.app-ph) #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optical Coatings and Gratings

paper · pdf · doi:10.48550/arxiv.2004.09013

openalex publication_date 2020/04/20 · openalex created_date 2020/04/24 · openalex updated_date 2026/07/28

Abstract

Conventional structural Luneburg lens is a symmetric circular gradient-index lens with refractive indices decreasing from the centre along the radial direction. In this paper, a flattened structural Luneburg lens (FSLL) based on structural thickness variations is designed by using the quasi-conformal transformation (QCT) technique. Through numerical simulations and experimental studies, the FSLL is demonstrated to have excellent beam steering performance for the manipulation of flexural wave propagation at desired angles.

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