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4 October 2024 Multi-resonant high-Q metasurfaces for optical imaging and information encoding
Pin Chieh Wu
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Proceedings Volume PC13142, ODS 2024: Industrial Optical Devices and Systems; PC1314201 (2024) https://doi.org/10.1117/12.3028741
Event: Optical Engineering + Applications, 2024, San Diego, California, United States
Abstract
In this era of digital advancement, securing communication and data has become crucial. Nanophotonic metasurfaces have shown great potential in light manipulation, but they are limited in spectral range and wavelength handling. This limitation hampers their effectiveness in optical imaging and information encryption, where broader spectral coverage and multiple resonant peaks are desired. We propose an innovative approach to address these challenges. Our multi-resonant high-Q metasurface platform integrates subwavelength plasmonic meta-atoms with a specially designed DBR substrate. This platform enables simultaneous excitation of multiple high-Q resonant modes across a broad spectrum. Through optimizing the nanostructures, the metasurface can support up to 15 high-Q peaks without compromising operational efficiency. To demonstrate our platform's performance, we present two practical applications. The first is a hyperspectral imaging system using a single multi-wavelength metasurface chip. The second application combines structural color printing and vectorial holographic imaging for advanced optical information encryption, leveraging our platform's capabilities.
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Pin Chieh Wu "Multi-resonant high-Q metasurfaces for optical imaging and information encoding", Proc. SPIE PC13142, ODS 2024: Industrial Optical Devices and Systems, PC1314201 (4 October 2024); https://doi.org/10.1117/12.3028741
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KEYWORDS
Optical imaging
Data storage
Data communications
Hyperspectral imaging
Imaging systems
Visible radiation
Plasmonics
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