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. 2009 Sep 11;103(11):113901.
doi: 10.1103/PhysRevLett.103.113901. Epub 2009 Sep 9.

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

G Adamo  1 , K F MacDonald, Y H Fu, C-M Wang, D P Tsai, F J García de Abajo, N I Zheludev
Affiliations

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

G Adamo et al. Phys Rev Lett. .

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 approximately 200 W/cm(2) as electrons with energies in the 20-40 keV range are injected into gold-silica well structures with a lateral size of just a few hundred nanometers.

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