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.

OSA Technical Digest
Photonic Materials

Karnieli, A. (Aviv), Roitman, D. (Dolev), Liebtrau, M. (Matthias), Tsesses, S. (Shai), van Nielen, N. (Nika), Polman, A., … Arie, A. (Ady). (2021). Smith-Purcell metasurface lens. In CLEO: QELS Fundamental Science 2021 - Part of Conference on Lasers and Electro-Optics. doi:10.1364/CLEO_AT.2021.JTh3A.32