期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.017402
关键词
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资金
- Defense Advanced Research Projects Agency [D15AP00111, HR0011-17-2-0017]
- National Science Foundation [ECCS-2004685, QII-TAQS-1936359]
- Air Force Office of Scientific Research [FA9550-14-1-0389]
- NSF IGERT program [DGE-1069240]
- NSF Graduate Research Fellowship Program [DGE-1644869]
Diffractive photonic devices manipulate light via local and nonlocal optical modes. Local devices, such as metasurfaces, can shape a wave front 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. Here, we introduce a rational design paradigm using quasibound states in the continuum to realize multifunctional nonlocal devices: metasurfaces that produce narrow band spatially tailored wave fronts at multiple selected wavelengths and yet are otherwise transparent.
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