光阱：芯片上的可调谐自由电子光源。
Light well: a tunable free-electron light source on a chip.
作者信息
Adamo G, MacDonald K F, Fu Y H, Wang C-M, Tsai D P, de Abajo F J García, Zheludev N I
机构信息
Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, United Kingdom.
出版信息
Phys Rev Lett. 2009 Sep 11;103(11):113901. doi: 10.1103/PhysRevLett.103.113901. Epub 2009 Sep 9.
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.
自由电子束穿过周期性分层金属-电介质结构中的纳米孔会产生一种新型的可调谐纳米级辐射源——“光阱”。在已报道的演示中，当能量在20 - 40 keV范围内的电子注入到横向尺寸仅为几百纳米的金-二氧化硅阱结构中时，会产生强度约为200 W/cm²的可调谐光。
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