Phys. Rev. Lett. 103, 113901 (2009) [4 pages]Light Well: A Tunable Free-Electron Light Source on a Chip
See accompanying Physics Synopsis 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 ∼200 W/cm2 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.113901
DOI:
10.1103/PhysRevLett.103.113901
PACS:
42.72.−g, 78.67.−n
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