Inverse-design of non-Hermitian potentials for light management

Muriel Botey; Waqas W. Ahmed; Ramon Herrero; Ying Wu; Kęstutis Staliūnas

doi:10.1117/12.2622135

24 May 2022 Inverse-design of non-Hermitian potentials for light management

Muriel Botey, Waqas W. Ahmed, Ramon Herrero, Ying Wu, Kęstutis Staliūnas

Proceedings Volume 12130, Metamaterials XIII; 121300B (2022) https://doi.org/10.1117/12.2622135
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

In this paper, we propose a general inverse-design strategy based on genetic algorithm optimization to achieve ‘on demand’ manipulation of light in one-dimensional (1D) and two-dimensional (2D) non-Hermitian systems. The optimization process faithfully creates non-Hermitian potentials from any given arbitrary real (or imaginary) permittivity distribution for the desired frequency selective and broadband asymmetric response in 1D multilayer structures. As a demonstration in 2D, we design periodic and aperiodic complex permittivity spatial distributions to create "sink-type" concentrators of light around a desired area. The proposed inverse-design approach to generate non-Hermitian potentials represents an alternative to the Hilbert Transform (HT) generalizing the Kramers Kronig relations in space, additionally being selective in spectrum.

Conference Presentation

Citation Download Citation

Muriel Botey, Waqas W. Ahmed, Ramon Herrero, Ying Wu, and Kęstutis Staliūnas "Inverse-design of non-Hermitian potentials for light management", Proc. SPIE 12130, Metamaterials XIII, 121300B (24 May 2022); https://doi.org/10.1117/12.2622135

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