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Subwavelength high contrast gratings (HCG) can be used as high reflective mirrors and can be used as mirrors of vertical-cavity surface-emitting lasers. HCG mirrors can be designed in such a way that they are extremely sensitive to environmental changes - changes in the refractive index of ambient substance or changes in the absorption coefficient may cause changes in mirror reflectivity. This phenomenon...
To analyse waveguiding characteristics of SiO2 cover layer upon Kretschman structure a relevant numerical modelling by the method of single expression is performed. Plasmonic and waveguiding properties of the structure are distinguished relying on optical field distributions for different thickness of the cover layer. Applications of thin SiO2 layer of the Kretschman structure as a protective cover...
To analyse an influence of intensity-dependent nonlinearity in analyte on surface plasmon (SP) excitation in Kretschman structure relevant wavelength-scale numerical modelling is performed by the method of single expression. At the fixed amplitude of intense incident wave a hysteresis in the reflectance is obtained revealing corresponding direction of angular interrogation depending on the sign of...
The emerging area of sub-wavelength photonics aims at integrating photonics with nanotechnology and achieving functionalities of a substantial novelty. Nevertheless, our understanding of the interplay between light and nanostructured matter is still incomplete, and full integration of light with nanoscale devices and processes, as well as dynamic and all-optical control of such structures, requires...
The talk discusses the challenges in sub-wavelength photonics, and it reports on the research agenda of a starting European project COST Action MP0702: towards functional sub-wavelength photonic structures.
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