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5 March 2021 Resonant wavefront-shaping metasurfaces
Nanfang Yu
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Proceedings Volume 11695, High Contrast Metastructures X; 1169507 (2021) https://doi.org/10.1117/12.2582856
Event: SPIE OPTO, 2021, Online Only
Abstract
Diffractive photonic devices manipulate light via local and nonlocal optical modes. Local devices, such as metasurfaces, can shape a wavefront at multiple selected wavelengths, but inevitably modify light across the spectrum; nonlocal devices, such as grating filters, offer great frequency selectivity but limited spatial control. In this talk, I will introduce a rational design paradigm using quasi-bound states in the continuum to realize multifunctional nonlocal devices: metasurfaces that produce narrowband spatially tailored wavefronts at multiple selected wavelengths and yet are otherwise transparent.
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Nanfang Yu "Resonant wavefront-shaping metasurfaces", Proc. SPIE 11695, High Contrast Metastructures X, 1169507 (5 March 2021); https://doi.org/10.1117/12.2582856
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KEYWORDS
Wavefronts
Augmented reality
Control systems
Dielectrics
Lenses
Optical filters
Photonic devices
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