Inverse-Designed Broadband All-Dielectric Electromagnetic Metadevices

F. Callewaert; V. Velev; P. Kumar; A. V. Sahakian; K. Aydin

doi:10.1038/s41598-018-19796-y

Inverse-Designed Broadband All-Dielectric Electromagnetic Metadevices

F. Callewaert, V. Velev, P. Kumar, A. V. Sahakian, K. Aydin^*

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

This paper presents a platform combining an inverse electromagnetic design computational method with additive manufacturing to design and fabricate all-dielectric metadevices. As opposed to conventional flat metasurface-based devices that are composed of resonant building blocks resulting in narrow band operation, the proposed design approach creates non-resonant, broadband (Δλ/λ up to >50%) metadevices based on low-index dielectric materials. High-efficiency (transmission >60%), thin (≤2λ) metadevices capable of polarization splitting, beam bending, and focusing are proposed. Experimental demonstrations are performed at millimeter-wave frequencies using 3D-printed devices. The proposed platform can be readily applied to the design and fabrication of electromagnetic and photonic metadevices spanning microwave to optical frequencies.

Original language	English (US)
Article number	1358
Journal	Scientific reports
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41598-018-19796-y
State	Published - Dec 1 2018

Funding

K.A. acknowledges support from the Office of Naval Research Young Investigator Program and the Robert R. McCormick School of Engineering and Applied Science at Northwestern University.

ASJC Scopus subject areas

General

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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abstract = "This paper presents a platform combining an inverse electromagnetic design computational method with additive manufacturing to design and fabricate all-dielectric metadevices. As opposed to conventional flat metasurface-based devices that are composed of resonant building blocks resulting in narrow band operation, the proposed design approach creates non-resonant, broadband (Δλ/λ up to >50%) metadevices based on low-index dielectric materials. High-efficiency (transmission >60%), thin (≤2λ) metadevices capable of polarization splitting, beam bending, and focusing are proposed. Experimental demonstrations are performed at millimeter-wave frequencies using 3D-printed devices. The proposed platform can be readily applied to the design and fabrication of electromagnetic and photonic metadevices spanning microwave to optical frequencies.",

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Inverse-Designed Broadband All-Dielectric Electromagnetic Metadevices

Abstract

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UN SDGs

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