摘要
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.
原文 | ???core.languages.en_GB??? |
---|---|
文章編號 | 113901 |
期刊 | Physical Review Letters |
卷 | 103 |
發行號 | 11 |
DOIs | |
出版狀態 | 已出版 - 9 9月 2009 |