Chinese Optics Letters, 2020, 18 (12): 120501, Published Online: Sep. 29, 2020
Multiple super-resolution imaging in the second band of gradient lattice spacing photonic crystal flat lens Download: 688次
Abstract
Based on the triangular lattice two-dimensional photonic crystal (PC), the lattice spacing along the transverse direction to propagation is altered, and a gradient PC (GPC) flat lens is designed. The band structures and equal frequency curves of the GPC are calculated; then, the imaging mechanism and feasibility are analyzed. The imaging characteristics of the GPC flat lens are investigated. It is observed that the GPC can achieve multiple types of super-resolution imaging for the point source. This GPC lens is allowed to be applied to imaging and other fields such as filtering and sensing.
Jie Sheng, Jianlan Xie, Jianjun Liu. Multiple super-resolution imaging in the second band of gradient lattice spacing photonic crystal flat lens[J]. Chinese Optics Letters, 2020, 18(12): 120501.