Nonlocal flat optics

被引：114

作者：

Shastri, Kunal ^{[1
]}

Monticone, Francesco ^{[1
]}

机构：

[1] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14850 USA

来源：

NATURE PHOTONICS | 2023年 / 17卷 / 01期

关键词：

FIELD CONFINEMENT; FREE-SPACE; LIGHT; LIMITS; METASURFACES; PROPAGATION; PERFORMANCE; MULTILAYER; STATE;

D O I：

10.1038/s41566-022-01098-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In electromagnetics and photonics, 'nonlocality' refers to the phenomenon by which the response/output of a material or system at a certain point in space depends on the input field across an extended region of space. Although nonlocal effects and the associated wavevector/momentum dependence have often been neglected or seen as a nuisance in the context of metasurfaces, the emerging field of nonlocal flat optics seeks to exploit strong effective nonlocality to enrich and enhance their response. Here we summarize the latest advances in this field, focusing on its fundamental principles and various applications, from optical computing to space compression. The convergence of local and nonlocal flat optics may open exciting opportunities in the quest to control light, in real and momentum space, using ultra-thin platforms.

引用

页码：36 / 47

页数：12

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