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THE upcoming nuclear fusion plants, such as ITER, pose new challenges under many scientific and technological fields. The requirements of the materials suitable for the operations in such facilities often involve optical, thermal and mechanical characteristics. It's the case of the diamond windows, whose outstanding performances make them the ideal choice as vacuum and tritium barriers inside the...
We recently demonstrated ultrathin, broadband, and highly efficient (reaching 88%) terahertz (THz) metamaterial structures exhibiting near-perfect anomalous (or generalized laws of) refraction. These structures redirect up to 61% of the incident power into the anomalous beam and practically eliminate the ordinary component. Here exploit this breakthrough to create more complex optical elements, specifically...
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