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Mid-Infrared Grayscale Metasurface Holograms

School of Science, Nanjing University of Science and Technology, Nanjing 210094, China
CINTRA, Nanyang Technological University, Singapore 637553, Singapore
Université Côte d’Azur, CNRS, CRHEA, rue Bernard Gregory, Sophia Antipolis, 06560 Valbonne, France
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(2), 552;
Received: 19 December 2019 / Revised: 8 January 2020 / Accepted: 9 January 2020 / Published: 11 January 2020
(This article belongs to the Section Optics and Lasers)
Optical metasurfaces composed of two-dimensional arrays of densely packed nanostructures can project arbitrary holographic images at mid-infrared frequency. Our approach employs silicon nanopillars to control light properties, including polarization-independent phase response working with high-transmission efficiency over the 2π-phase modulation range at wavelength 4.7 μm. We experimentally dispose nanopillars accordingly to phase-only profiles calculated using the conventional Gerchberg–Saxton algorithm and revealed the optical performances of our devices using a mid-infrared on-axis optical setup. The total efficiency of our reflection hologram reaches 81%. Our experimental results agree well with the image of the desired object, opening up new perspectives for mid-infrared imaging and displaying for military, life science and sensing application. View Full-Text
Keywords: metasurfaces; hologram; mid-infrared optics metasurfaces; hologram; mid-infrared optics
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MDPI and ACS Style

Wu, K.; Kossowski, N.; Qiu, H.; Wang, H.; Wang, Q.; Genevet, P. Mid-Infrared Grayscale Metasurface Holograms. Appl. Sci. 2020, 10, 552.

AMA Style

Wu K, Kossowski N, Qiu H, Wang H, Wang Q, Genevet P. Mid-Infrared Grayscale Metasurface Holograms. Applied Sciences. 2020; 10(2):552.

Chicago/Turabian Style

Wu, Kedi, Nicolas Kossowski, Haodong Qiu, Hong Wang, Qijie Wang, and Patrice Genevet. 2020. "Mid-Infrared Grayscale Metasurface Holograms" Applied Sciences 10, no. 2: 552.

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