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Article

Broadband Holography via Structured Black Silicon Nano-Antennas

PRIMALIGHT, Faculty of Electrical Engineering; Applied Mathematics and Computational Science, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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Author to whom correspondence should be addressed.
Both authors contributed equally to the work.
Appl. Sci. 2019, 9(7), 1378; https://doi.org/10.3390/app9071378
Received: 6 March 2019 / Revised: 26 March 2019 / Accepted: 27 March 2019 / Published: 1 April 2019
(This article belongs to the Special Issue Optical Nanoantennas)
Computer-generated holograms have wide applications in different fields of optics, ranging from imaging, data storage, to security.Herein, we report a new method for the fabrication of large-scale computer-generated holograms from an inexpensive material, such as Silicon. Our approach exploits dry etching to create a series of broadband nanoantennas, which can tune the reflectivity of Si from an average of 0.35 to 0.1 in the entire visible range. We demonstrated the realisation of different images at wavelengths of 450 nm, 532 nm, and 632 nm with an efficiency of 10%, 14%, and 12%, respectively, thus opening up the application of large-scale broadband computer-generated holographic surfaces. View Full-Text
Keywords: computer-generated holograms; black silicon; broadband holography computer-generated holograms; black silicon; broadband holography
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MDPI and ACS Style

Sait, M.; Mazzone, V.; Fratalocchi, A. Broadband Holography via Structured Black Silicon Nano-Antennas. Appl. Sci. 2019, 9, 1378. https://doi.org/10.3390/app9071378

AMA Style

Sait M, Mazzone V, Fratalocchi A. Broadband Holography via Structured Black Silicon Nano-Antennas. Applied Sciences. 2019; 9(7):1378. https://doi.org/10.3390/app9071378

Chicago/Turabian Style

Sait, Mohammed, Valerio Mazzone, and Andrea Fratalocchi. 2019. "Broadband Holography via Structured Black Silicon Nano-Antennas" Applied Sciences 9, no. 7: 1378. https://doi.org/10.3390/app9071378

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