Scattering Amplitude of Surface Plasmon Polariton Excited by a Finite Grating.

Unusual optical properties of laser-ablated metal surfaces arise from the excitation of local plasmon resonances in nano- and microstructures produced by laser-processing and from the mutual interaction of those structures through surface plasmon polariton (SPP) waves. This interaction provides a synergistic effect, which can make the optical properties of the composite nanostructure drastically different from the properties of its elements. At the same time, the prediction and analysis of these properties are hampered by the complexity of the analytical solution to the problem of SPP excitation by surface objects of arbitrary configuration.

Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna.

Since surface plasmon polaritons (SPPs) are surface waves, they cannot be excited by an incident plane wave, because free-space photons do not possess a sufficient in-plane momentum. Phase matching between the incident light and SPP can be achieved using a high-refractive-index prism, grating, or nanoantennas. In this work, we found an expression for the amplitude of SPP excited by an arbitrary 3D current distribution placed near a metal interface.

Tunable Fano-like resonances in bent single-mode waveguide-based Fabry-Perot resonator: erratum.

In this erratum, we correct an error in the numerical simulation results published in Opt. Lett.44, 231 (2019)OPLEDP0146-959210.

Tunable Fano-like resonances in a bent single-mode waveguide-based Fabry-Perot resonator.

Tunable Fano-like resonances are demonstrated numerically in a single Fabry-Perot resonator made of a bent single-mode waveguide. The resonances are shown to arise from the strong coupling between the fundamental mode of the core and a whispering gallery mode of the cladding. The tuning is realized by changing the bend radius of the waveguide.