Experimental demonstration of surface plasmon polaritons reflection and transmission effects

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Zheng, L.; Zywietz, U.; Evlyukhin, A.; Roth, B.; Overmeyer, L.; Reinhardt, C.: Experimental demonstration of surface plasmon polaritons reflection and transmission effects. In: Sensors (Switzerland) 19 (2019), Nr. 21, 4633. DOI: https://doi.org/10.3390/s19214633

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Special integrated photonic surface structures composed of a dielectric semicircle ridge and a dielectric block placed on a metal substrate are proposed for the investigation of surface plasmon polariton (SPP) reflection and transmission effects. A fabrication method called microscope projection photolithography was employed for the preparation of the structures. Leakage radiation microscopy was applied for the excitation and observation of surface plasmon polaritons (SPPs). It was observed that SPPs exhibit a remarkable decrease in intensity when impinging onto the rectangular dielectric block. Nevertheless, the transmitted wave out of the dielectric block was always observable. The propagation behavior of both the reflected waves at two boundaries (air/dielectric and dielectric/air) and the transmitted wave inside the dielectric block were demonstrated for different SPP incident conditions. The variation of the angles of reflection and transmission with respect to the incident angle was analytically and experimentally investigated. An agreement between the calculated results and the experimental results was obtained. Our findings might allow for novel applications in sensing and analytics once the structures will be functionalized.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Fakultät für Maschinenbau
Fakultät für Mathematik und Physik

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4 image of flag of United Kingdom United Kingdom 2 1.29%
5 image of flag of Ukraine Ukraine 1 0.65%
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