Active negative-index metamaterial powered by an electron beam
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2012-08-21
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An active negative index metamaterial that derives its gain from an electron beam is introduced. The metamaterial consists of a stack of equidistant parallel metal plates perforated by a periodic array of holes shaped as complementary split-ring resonators. It is shown that this structure supports a negative-index transverse magnetic electromagnetic mode that can resonantly interact with a relativistic electron beam. Such a metamaterial can be used as a coherent radiation source or a particle accelerator. © 2012 American Physical Society.
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Shapiro, MA, S Trendafilov, Y Urzhumov, A Alù, RJ Temkin and G Shvets (2012). Active negative-index metamaterial powered by an electron beam. Physical Review B - Condensed Matter and Materials Physics, 86(8). p. 085132. 10.1103/PhysRevB.86.085132 Retrieved from https://hdl.handle.net/10161/7572.
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