Parity-Time Symmetric Nonlocal Metasurfaces: All-Angle Negative Refraction and Volumetric Imaging
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Date
2016
Authors
Monticone, Francesco
Valagiannopoulos, Constantinos
Alù, Andrea
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society. Physical Review X
Abstract
Lens design for focusing and imaging has been optimized through centuries of developments; however,
conventional lenses, even in their most ideal realizations, still suffer from fundamental limitations, such as
limits in resolution and the presence of optical aberrations, which are inherent to the laws of refraction. In
addition, volume-to-volume imaging of three-dimensional regions of space is not possible with systems
based on conventional refractive optics, which are inherently limited to plane-to-plane imaging. Although
some of these limitations have been at least theoretically relaxed with the advent of metamaterials, several
challenges still stand in the way of ideal imaging of three-dimensional regions of space. Here, we show that
the concept of parity-time symmetry, combined with tailored nonlocal responses, enables overcoming some
of these challenges, and we propose the design of a loss-immune, linear, transversely invariant, planarized
metamaterial lens, with reduced aberrations and the potential to realize volume-to-volume imaging.
Description
Keywords
Metamaterials, Optics
Citation
Francesco Monticone, Constantinos Valagiannopoulos, and Andrea Alù; 2016; Parity-Time Symmetric Nonlocal Metasurfaces: All-Angle Negative Refraction and Volumetric Imaging; PHYSICAL REVIEW X; http://nur.nu.edu.kz/handle/123456789/1897