Work

Linear and nonlinear coherent perfect absorbers on simple layers

Year: 2018

Type: article

Abstract: We consider linear and nonlinear coherent perfect absorbers (CPAs) in multidimensional geometries and construct explicitly the respective perfectly absorbed solutions. The multidimensional CPAs have the structure of the so-called simple layers which represent the generalization of the point $\ensuremath{\delta}$ function potential to higher dimensions. The considered examples include broadband CPAs confined to a straight line (in a two-dimensional setting) and to a plane (in the three-dimensional space), CPAs for topological vortices on an absorbing circle, as well as axially symmetric CPAs on a sphere. Additionally, it is shown that a paraxial beam propagating along a surface nonlinear CPA embedded in the three-dimensional space can be stable against perturbations. The results are interpreted in applications to optical and acoustic systems.

Source: Physical Review A

DOI: 10.1103/physreva.97.063850

Authors: Vladimir V. Konotop, Dmitry A. Zezyulin

Institutions: University of Lisbon, Centro de Física Teórica e Computacional, ITMO University

Language: English

Topic: Quantum Mechanics and Non-Hermitian Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Russian Science Foundation

Award: G711124043