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Smith-Purcell metasurface lens

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DOI http://dx.doi.org/10.1364/CLEO_AT.2021.JTh3A.32
Reference A. Polman: Smith-Purcell metasurface lens In: CLEO: QELS Fundamental Science 2021 - Part of Conference on Lasers and Electro-Optics, OSA Technical Digest, 2021.
Group Photonic Materials

We demonstrate focused emission of visible and near-infrared Smith-Purcell radiation by a free-electron-driven metasurface lens emitter. Our findings pave the way for free-electron light sources focusing at wavelengths lacking efficient optics.

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