2020
DOI: 10.1063/5.0033312
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Flat photonics for broadband light-trapping

Abstract: The ability to trap light in an ultrathin photoactive layer has been of great significance for applications ranging from optoelectronics, energy to spectroscopy. However, the current broadband light trapping suffers from undesirable direct Joule heat output with plasmonics or bulkiness with photonics. Here, we report a light-trapping photonic structure using an ultrathin all-dielectric super-absorbing metasurface. This presented photonic structure features asymmetrically coupled magnetic resonances, which elim… Show more

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Cited by 10 publications
(1 citation statement)
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“…When a thin layer of high-loss material is introduced below the dielectric cavity, most of the coupled multipole field is asymmetrically absorbed by the lossy layer (figs. S1 and S2) ( 26 ), where the absorbing layer must remain thin to limit the degradation of the dielectric resonance. This is shown in Fig.…”
Section: Resultsmentioning
confidence: 99%
“…When a thin layer of high-loss material is introduced below the dielectric cavity, most of the coupled multipole field is asymmetrically absorbed by the lossy layer (figs. S1 and S2) ( 26 ), where the absorbing layer must remain thin to limit the degradation of the dielectric resonance. This is shown in Fig.…”
Section: Resultsmentioning
confidence: 99%