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 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.
- Received 7 July 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.113901
©2009 American Physical Society
Synopsis
Drilling for tunable photons in a nanohole
Published 21 September 2009
The demonstration of photon emission as free-electrons pass through a nanoscale grating could pave the way for a new generation of on-chip tunable light sources.
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