Controlling light emission by a thermalized ensemble of colloidal quantum dots with a metasurface - Groupe Nanophotonique Access content directly
Journal Articles Optics Express Year : 2023

Controlling light emission by a thermalized ensemble of colloidal quantum dots with a metasurface

Abstract

We report an experimental and theoretical study of light emission by a patterned ensemble of colloidal quantum dots (cQDs). This system modifies drastically the emission spectrum and polarization as compared to a planar layer of cQDs. It exhibits bright, directional and polarized emission including a degree of circular polarization in some directions. We introduce a model of light emission based on a local Kirchhoff law which reproduces accurately all the features of the experiment. The model provides a figure of merit to assess quantitatively the emitted power. This work paves the way to the systematic design of efficient ultrathin light emitting metasurfaces with controlled polarization, spectrum and directivity.
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hal-03950212 , version 1 (21-01-2023)

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Hector Monin, Aurelian Loirette--Pelous, Eva de Leo, Aurelio A Rossinelli, Ferry Prins, et al.. Controlling light emission by a thermalized ensemble of colloidal quantum dots with a metasurface. Optics Express, 2023, 31 (3), pp.4851-4861. ⟨10.1364/OE.471744⟩. ⟨hal-03950212⟩
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