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Honeycomb-lattice p...
Honeycomb-lattice plasmonic absorbers at NIR : anomalous high-order resonance
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- Chen, Yiting (författare)
- KTH,Optik och Fotonik, OFO
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- Dai, Jin (författare)
- KTH,Optik och Fotonik, OFO
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- Yan, Min (författare)
- KTH,Optik och Fotonik, OFO
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- Qiu, Min (författare)
- KTH,Optik och Fotonik, OFO
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
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Ingår i: Optics Express. - 1094-4087. ; 21:18, s. 20873-20879
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We design, fabricate and characterize a plasmonic honeycomb lattice absorber with almost perfect absorption at 1140 nm over a wide incident angle range. This absorber also possesses a narrow-band, angle-and polarization-dependent high-order resonance in the short-wavelength range, with a bandwidth of 19 nm and angle sensitivity of 3 nm per degree. The nature of this high-order absorption band is analyzed through finite-element simulations. We believe it is due to Bragg coupling of the incident light to the backward-propagating surface plasmon polariton through the periodic modulation of the structure. Such fine absorption bands can find applications in plasmonic sensors and spectrally selective thermal emitters.
Nyckelord
- Electromagnetic wave polarization
- Honeycomb structures
- Surface plasmon resonance
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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