Speckle-free single-layer metasurface holograms

Babak Mirzapourbeinekalaye; Maryam Ghahremani; Amir Arbabi

doi:10.1117/12.3003376

13 March 2024 Speckle-free single-layer metasurface holograms

Babak Mirzapourbeinekalaye, Maryam Ghahremani, Amir Arbabi

Proceedings Volume PC12897, High Contrast Metastructures XIII; PC128970G (2024) https://doi.org/10.1117/12.3003376
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We introduce high-resolution speckle-free holograms, created using polarization manipulating metasurfaces. The holograms enable clear projection of 2D and 3D images, in contrast to conventional holograms with significant speckle noise. The approach uses a simple non-iterative algorithm at a low computational cost. As a proof of concept, we demonstrate a reflective hologram composed of silicon nitride nanoposts on an aluminum layer that projects a high-resolution grayscale image. By implementing three holograms for primary colors, full-color far-field and 3D holograms become feasible, with potential applications in anticounterfeiting tags.

Conference Presentation

Citation Download Citation

Babak Mirzapourbeinekalaye, Maryam Ghahremani, and Amir Arbabi "Speckle-free single-layer metasurface holograms", Proc. SPIE PC12897, High Contrast Metastructures XIII, PC128970G (13 March 2024); https://doi.org/10.1117/12.3003376

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