Light well: A tunable free-electron light source on a chip

G. Adamo, K.F. MacDonald, Y.H. Fu, C.-M. Wang, Din-ping Tsai, F.J. García De Abajo, N.I. Zheludev

Research output: Journal article publicationJournal articleAcademic researchpeer-review

124 Citations (Scopus)

Abstract

The passage of a free-electron beam through a nanohole in a periodically layered metal-dielectric structure creates a new type of tunable, nanoscale radiation source-a "light well". In the reported demonstration, tunable light is generated at an intensity of ?200W/cm2 as electrons with energies in the 20-40keV range are injected into gold-silica well structures with a lateral size of just a few hundred nanometers. © 2009 The American Physical Society.
Original languageEnglish
Article number113901
JournalPhysical Review Letters
Volume103
Issue number11
DOIs
Publication statusPublished - 9 Sep 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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