Tensor-Driven Geometric Phase in Nonlinear AlGaAs Metasurfaces

Giorgio Guercio; Andrea Gerini; Kristina Frizyuk; Martina Morassi; Aristide Lemaître; Costantino De Angelis; Luca Carletti; Giuseppe Leo

doi:10.1021/acsphotonics.6c00299

journal article·2026-06-03Open access

Tensor-Driven Geometric Phase in Nonlinear AlGaAs Metasurfaces

Giorgio Guercio, Andrea Gerini, Kristina Frizyuk, Martina Morassi, Aristide Lemaître, Costantino De Angelis, Luca Carletti, Giuseppe Leo

ACS Photonics· Volume 13· Issue 11

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Source abstract

Abstract

Dielectric metasurfaces provide a unique platform for efficient harmonic generation and optical wavefront manipulation at the nanoscale. While several approaches are available for performing wavefront shaping, the one exploiting geometric phase streamlines significantly the design and fabrication process. It has been recently shown that, in III–V semiconductor alloys, the rotation of the crystal axes affects the phase and amplitude of second-harmonic generation induced by circularly polarized light (Carletti et al. Nanophotonics 2024, 13 (18), 3321–3326). Based on this notion, we designed, fabricated, and characterized two aluminum gallium arsenide metasurfaces displaying the versatility of the geometric phase approach through nonlinear beam steering and structured-light generation on the harmonic field.

Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloys Nanomaterials Electronic materials

OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Orbital Angular Momentum in Optics

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

Affiliations

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

Karlsruhe Institute of Technology, Kaiserstrasse, 12, Karlsruhe 76131, Germany

Centre de Nanosciences et de Nanotechnologies, Université Paris-Saclay and CNRS, 10 Boulevard Thomas Gobert, Palaiseau 91120, France

Department of Information Engineering, University of Brescia, Via Branze 38, Brescia 25123, Italy

INO−CNR, Via Branze 45, Brescia 25123, Italy

Institut Universitaire de France

Funding

Agence Nationale de la Recherche · NextGenerationEU · Alexander von Humboldt-Stiftung · PNRR - M4C2 · PRIN 2022

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