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Realization of Flattened Structural Luneburg Lens Based on Quasi-Conformal Transformation (2004.09013v1)
Published 20 Apr 2020 in physics.app-ph
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.