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    Topology Protects Light Propagation in Photonic Crystal

    Article obtained from Photonics RSS Feed.

    A team from the research institute AMOLF and Delft University of Technology (TU Delft) observed light propagation within a photonic crystal without the usual distortion caused by reflections. Because the crystal consists of two parts, each with a slightly different pattern of perforations, light can propagate along the boundary between the two parts in such a way that it is “topologically protected,” and therefore does not bounce back at imperfections. Even when the boundary forms a sharp corner, the light follows it without a problem.

    AMOLF’s Ewold Verhagen and TU Delft’s Kobus Kuipers are two of the researchers investigating a new class of electronic materials known as topological insulators. While most materials are…

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    Mar, 09 2020 |

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