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In the present study, the interaction of optical radiation with a system of periodically arranged gold and silver nanowires of the square cross-sections on the dielectric substrate has been analyzed. The spectral character of the absorption, reflection and transmission at the interaction of the optical wave with nanogratings based on gold and silver is qualitatively and quantitatively different. It...
A results of numerical analysis RCWA diffraction by metal gratings under plasmon resonance are presented. Numerical experiments show low convergence of traditional RCWA for such types of the resonances of electromagnetic field. Modified RCWA for studying resonance diffraction phenomena on metal gratings was proposed. Dielectric permittivity functional dependence of grating as complex Fourier series...
This work presents research of the sensors element refractive index. Presented sensor element consists of the one-dimensional relief Au-coated GaAs grating. The grating parameters have been optimized to maximize angular sensing signal using RCWA method. High sensitivity due to plasmon polariton resonance was observed under TM polarization. The optimized grating was manufactured using method of photo...
In this paper the spectral properties of silver nanoparticles and titanium oxide-silver nanoshells have been studied. Dependences surface plasmons resonance peak of the nanoshells from particle size and refractive index of the surrounding medium are researched.
We describe optical sensors based on the waveguide resonance phenomenon which allow for label-free detection of thin layers of varying refractive index. We present a design for sensor which can perform real-time analysis.
The prismatic structures for excitation surface plasmon polariton and waveguide modes resonances were investigated. The first structure consists of a glass prism and thin metallic layer deposited on the prism. The second one includes an additional dielectric layer. Plasmon polariton resonance can be observed only for TM polarization at finely tuned structure parameters. Waveguide modes resonance is...
The five-layer structure of dielectric interference filter for the infra-red region of spectrum was researched. The refractive indices optimal and thicknesses of individual layers are obtained for thin-film filter with interference mirror.
The investigation three-component constructions of the narrow-band dielectric filters is presented. The analysis of the transmission and reflection this system is conducted by method of matrix. This system thin-film can be used as infrared interference filters.
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