Optical properties of 1D metal nanogratings |
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Authors: | I A Chernykh D A Mamichev Yu V Grishchenko V V Roddatis M L Zanaveskin M R Shcherbakov A A Fedyanin E G Novoselova I S Smirnov A N Marchenkov |
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Institution: | (1) State Key Laboratory of New Ceramic and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China |
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Abstract: | Nanostructures consisting of metal nanogratings made of Au on quartz substrates are produced. The structural characteristics
of samples are studied using atomic force and scanning electron microscopies (AFM and SEM). The optical properties of samples
in the visible spectral region are also studied. The studies show that these nanostructures are characterized by a high degree
of periodicity and the nanowire profile shape is close to the rectangular one. Effective excitation of surface plasmon-polariton
waves is observed in nanogratings; in this case the effectiveness of their excitation depends considerably on the polarization
of exciting radiation and on the grating filling factor. It is established that various types of plasmon-polariton waves (local
or traveling waves) can be excited depending on the grating filling factor. Optical effects observed in the given structures
can be used to produce high-speed sensor and optoelectronic elements based on them, such as highly sensitive new-generation
biosensors, optical filters, polarizers, and modulators. |
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