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A theoretical re-ex...
A theoretical re-examination of giant transmission of light through a metallic nano-slit surrounded with periodic grooves
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Cui, Y. X. (författare)
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- He, Sailing (författare)
- KTH,Elektroteknisk teori och konstruktion
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Optics Express. - 1094-4087. ; 17:16, s. 13995-14000
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We show that the slit-to-groove distance for a maximal transmission through the nano-slit surrounded with periodic grooves cannot be predicted by the theory of constructive interference between the groove-generated surface plasmon wave (SPW) and the incident wave. A clear physical explanation is given for the dependence of the transmission on the slit-to-groove distance. It is shown that the influence to the transmission comes from three parts: the groove-generated SPW, the incident wave and the nano-slit-generated SPW. The groove-generated SPW is the main factor determining the local field distribution around the nano-slit opening. The influence of the incident wave is very weak when strong SPW is generated on the input surface by many periods of deep grooves. The nano-slit-generated SPW can also be considered as a disturbance to the light distribution on the input surface.
Nyckelord
- evanescent-wave model
- subwavelength hole arrays
- optical-transmission
- apertures
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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