Spectroscopic ellipsometry measurements were performed on antiferromagnetic semiconductor CuFeS 2 grown via molecular beam epitaxy. UV/Visible and IR data was merged modeled to derive the dielectric function of from 30 meV 4.5 eV. The samples characterized by X-ray diffraction (XRD), atomic force microscopy (AFM) cross-section scanning electron (SEM) which gave crystal quality, surface roughness sample film thickness. A critical point analysis revealed a direct band gap 0.76 eV, while...

Optical metasurface technology promises an important potential for replacing bulky traditional optical components, in addition to enabling new compact and lightweight metasurface-based devices. Since even subtle imperfections design or manufacture strongly affect their performance, there is urgent need develop proper accurate protocols characterization, allowing efficient control of the fabrication. We present non-destructive spectroscopic Mueller matrix ellipsometry uncommon off-specular...

The surface magnon polaritons (SMPs) present in thin film antiferromagnet semiconductors can be extremely confined, having most of their energy distributed within the magnetic medium. For films these SMPs therefore well described using a quasimagnetostatic treatment. In this work Berreman's $4\ifmmode\times\else\texttimes\fi{}4$ transfer matrix method (TMM) is used to study supported by thicker films, beyond magnetostatic approximation. Focus placed on semiconductor ${\mathrm{MnF}}_{2}$ for...

“Can one hear the shape of a drum?” was question posed (and made famous) by mathematician Mark Kac in mid-1960s. It addresses whether deeper connection exists between resonance modes (eigenmodes) drum and its shape. Here, we propose numerical experiment, suitable for advanced undergraduate physics students, on calculation eigenmodes square Koch fractal drum, which experimental results do exist. This exercise is designed to develop students' understanding vibrations drums, their eigenmodes,...

The combination of organics and metals in a composite film holds promise for combining plasmonic interaction with gain the realization epsilon-near-zero (ENZ) metamaterials. In particular, fluorescent organic dyes can be used to compensate losses homogenized metal-organic material. Here, we fabricate such films through thermal co-evaporation silver an host:guest system investigate experimentally resulting linear optical properties varying metal concentrations. We extract effective...

Spectroscopic Mueller matrix ellipsometry is used to study an array of rectangular Au patches on a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi mathvariant="normal">S</mml:mi> mathvariant="normal">i</mml:mi> mathvariant="normal">O</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msub> </mml:math> film backed by optically thick Au. The supports resonances related gap surface plasmons and Rayleigh anomalies, these...

Spectroscopic polar angle resolved Mueller matrix ellipsometry at multiple azimuthal incidences, together with a full-field model, reveal new details in the interplay between localized gap surface plasmon resonances and propagating polaritons (SPPs) rectangular array of metal-insulator-metal patches. A plane-wave expansion field insulator shows that fundamental are composed oppositely modes. Sharp dispersive observed p-polarization, excited near opening diffracted orders, shown to be grating...

``Can one hear the shape of a drum?'' was question posed (and made famous) by mathematician Mark Kac in mid-1960s. It addresses whether deeper connection exists between resonance modes (eigenmodes) drum and its shape. Here we propose numerical experiment, suitable for advanced undergraduate physics students, on calculation eigenmodes square Koch fractal drum, which experimental results do exist. This exercise is designed to develop students' understanding vibrations drums, their eigenmodes,...