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Inverse-Designed Broadband All-Dielectric Electromagnetic Metadevices.

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 (??/? up to >50%) metadevices based on low-index dielectric materials. High-efficiency (transmission >60%), thin (?2?) 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.

SUBMITTER: Callewaert F

PROVIDER: S-EPMC5778146 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Inverse-Designed Broadband All-Dielectric Electromagnetic Metadevices.

Callewaert F F Velev V V Kumar P P Sahakian A V AV Aydin K K

Scientific reports 20180122 1

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) meta ...[more]

PMID: 29358737

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