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arXiv · 2502.15313

Microfluidic-Assisted Growth of Perovskite Microwires for Room-Temperature All-Optical Switching Based on Total Internal Reflection

Annalisa Coriolano·Antonio Fieramosca·Laura Polimeno·Rosanna Mastria·Francesco Todisco·Milena De Giorgi·Luisa De Marco·Aurora Rizzo·Dario Ballarini·Ilenia Viola·Daniele Sanvitto
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Abstract

The development of efficient integrated photonic circuits is fundamental for ongoing research in information processing and computer science. The greatest challenge in strong light-matter regime facing photonic systems is achieving strong nonlinearities, which are exploitable in strongly coupled systems, leading to the formation of exciton-polaritons. In this context, the use of hybrid organic-inorganic perovskites offers a promising alternative, exhibiting robust interactions at Room Temperature (RT). However, the development of perovskite-based integrated devices requires both the ability to achieve long in-plane propagation, and the development of alternative fabrication approaches tailored to perovskite materials, designed to preserve their optical properties and prevent degradation. Herein, we present the realization of a proof-of-concept all-optical switch using propagating polaritons confined in Total Internal Reflection (TIR), which ensures long in-plane propagation and limited optical losses. We realized an efficient injection/extraction of the TIR-confined waveguide polariton modes by employing gold grating couplers prepatterned on the substrate.

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Annalisa Coriolano, Antonio Fieramosca, Laura Polimeno, Rosanna Mastria, Francesco Todisco, Milena De Giorgi, Luisa De Marco, Aurora Rizzo, Dario Ballarini, Ilenia Viola, Daniele Sanvitto. 2025-02-21. Microfluidic-Assisted Growth of Perovskite Microwires for Room-Temperature All-Optical Switching Based on Total Internal Reflection. https://arxiv.org/abs/2502.15313

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