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We report on a spin-symmetry breaking in thermal radiation from a coupled thermal antenna array, supporting localized phonon-polaritons, whose local anisotropy axis is rotated in space.
A wave-front phase dislocation due to the scattering of surface plasmons from a topological defect is directly measured in the near field by means of interference. The analogy to the Aharonov-Bohm effect is presented.
Coherent thermal emission from an anisotropic microstructure upon SiC is presented. The enhanced coherency is due to coupled resonant cavities supported by surface phonon-polaritons. A quality-factor 600 and an angular divergence of 1.4mrad are obtained.
We experimentally show a quasi-monochromatic and directional thermal source with a spatial coherence length in the far-field that is much larger than the predicted limit related to the surface phonon-polariton coherence of a flat surface.
The behavior of geometric phase elements illuminated with partially polarized monochromatic beams is investigated both theoretically and experimentally. The element discussed in this paper is composed of wave plates with π-retardation and a space-variant orientation angle. We found that a beam emerging from such an element comprises two polarization orders; right-and left-handed circularly polarized...
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