文献类型： 会议论文

第一作者： Didier Felbacq

作者： Didier Felbacq ¹ ; Emmanuel Kling ² ;

作者机构： 1.L2C, Univ. Montpellier, 34095 Montpellier, France

2.Sagem Electronics & Defense, Massy, France

关键词： No pain;no gain;active medium

会议名称： SPIE Conference on Nanostructured Thin Films

主办单位：

页码： 1073109-1-1073109-4

摘要： Several aspects of photonics, such as laser cavities, random lasing, plasmonics, strong coupling with matter etc. requires the description of a medium exhibiting gain. A very simple model consists in using an effective permittivity with a sign changing imaginary part, as compared to a non-active material. Using this model, we investigate the possibility of controlling the closing or opening of a band-gap inside a dielectric metamaterial. Further, we question the model itself and show that it leads to non-physical effects. The conclusion is that the model is not reliable for more than a short time description of the physics at stake.

分类号： N-532