Phase change material-based metasurfaces for efficient dynamic beam steering

Le résumé fourni par la source

In this study, we introduce a novel metaphotonic structure using phase-change materials for efficient beam steering through linearly variable refractive index manipulation. Leveraging the unique properties of Sb2Se3, a versatile phase change material, we create a metasurface capable of precisely controlling light propagation. By inducing a linear phase variation in the incident light, our metasurface effectively deflects light in the desired direction, following the principles of the generalized Snell's law. Simulation results demonstrate the development of a highly efficient beam steerer, achieving an impressive redirection range of approximately 10 degrees with an exceptional efficiency exceeding 80% in one material phase. In the other phase, where material loss impacts efficiency, we still achieve rates exceeding 40%. These remarkable levels of efficiency highlight the potential of phase change materials in photonic applications and position our metastructure as a promising candidate for advanced photonic devices and systems, offering precise and efficient beam steering capabilities.

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