Phase change material-based metasurfaces for efficient dynamic beam steering

Amin Khavasi; Hamed Abiri; Mahmood Reza Marzban; Ashkan Zandi; Mohammad Reza Tavakol; Ali Adibi

doi:10.1117/12.3012675

13 March 2024 Phase change material-based metasurfaces for efficient dynamic beam steering

Amin Khavasi, Hamed Abiri, Mahmood Reza Marzban, Ashkan Zandi, Mohammad Reza Tavakol, Ali Adibi

Proceedings Volume PC12896, Photonic and Phononic Properties of Engineered Nanostructures XIV; PC128961K (2024) https://doi.org/10.1117/12.3012675
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

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.

Citation Download Citation

Amin Khavasi, Hamed Abiri, Mahmood Reza Marzban, Ashkan Zandi, Mohammad Reza Tavakol, and Ali Adibi "Phase change material-based metasurfaces for efficient dynamic beam steering", Proc. SPIE PC12896, Photonic and Phononic Properties of Engineered Nanostructures XIV, PC128961K (13 March 2024); https://doi.org/10.1117/12.3012675

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