Polyakov A, Zolotorev M, Schuck P J, Padmore H A
Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA.
Opt Express. 2012 Mar 26;20(7):7685-93. doi: 10.1364/OE.20.007685.
Nanometer sized cavities arranged as a subwavelength metallic grating can provide omni-directional and complete absorption of light. We present an explanation of this extraordinary phenomenon as a collective resonant response of a system based on a surface impedance model. This model gives a straightforward way to design systems for optimum light trapping performance and as well gives fundamental insights into the interaction of light with metals at the nanoscale.
排列成亚波长金属光栅的纳米级腔体能实现光的全向和完全吸收。我们基于表面阻抗模型，将这一非凡现象解释为系统的集体共振响应。该模型为设计具有最佳光捕获性能的系统提供了一种直接的方法，同时也为纳米尺度下光与金属的相互作用提供了基本见解。
