DataVXAdvanced Optical MaterialsPaper
journal article·2024-06Open access

Resonant Fully Dielectric Metasurfaces for Ultrafast Terahertz Pulse Generation

Luke Peters, Davide Rocco, Luana Olivieri, Unai Arregui Leon, Vittorio Cecconi, Luca Carletti, Carlo Gigli, Giuseppe Della Valle, Antonio Cutrona, Juan Sebastian Totero Gongora, Giuseppe Leo, Alessia Pasquazi, Costantino De Angelis, Marco Peccianti

Advanced Optical Materials· Volume 12· Issue 16
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Source abstract

Abstract

Abstract Metasurfaces represent a new frontier in materials science paving for unprecedented methods of controlling electromagnetic waves, with a range of applications spanning from sensing to imaging and communications. For pulsed terahertz (THz) generation, metasurfaces offer a gateway to tuneable thin emitters that can be utilized for large‐area imaging, microscopy, and spectroscopy. In literature, THz‐emitting metasurfaces generally exhibit high absorption, being based either on metals or on semiconductors excited in highly resonant regimes. Here, the use of a fully dielectric semiconductor exploiting morphology‐mediated resonances and inherent quadratic nonlinear response is proposed. This system exhibits a remarkable 40‐fold efficiency enhancement compared to the unpatterned at the peak of the optimized wavelength range, demonstrating its potential as a scalable emitter design.
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Research context

Electronic materials

OpenAlex topics: Metamaterials and Metasurfaces Applications · Terahertz technology and applications · Plasmonic and Surface Plasmon Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Emergent Photonics Research Centre Dept. of Physics Loughborough University Loughborough LE11 3TU UK

Emergent Photonics Lab (Epic) Department of Physics and Astronomy University of Sussex Brighton BN1 9QH UK

Department of Information Engineering University of Brescia via Branze 38 Brescia 25123 Italy

Politecnico di Milano Department of Physics Piazza Leonardo Da Vinci 32 Milan 20133 Italy

Matériaux et Phénomènes Quantiques Université Paris Cité and CNRS 10 rue A. Domon et L. Duquet Paris 75013 France

Funding

European Research Council · Ministero dell’Istruzione, dell’Università e della Ricerca · Leverhulme Trust · Engineering and Physical Sciences Research Council · HORIZON EUROPE European Research Council

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