论文标题
ZnO纳米线的激光模式与平面金属耦合
Lasing modes in ZnO nanowires coupled to planar metals
论文作者
论文摘要
半导体纳米线激光器可能会因其环境变化而导致其激光阈值的修改。一个有希望的选择是使用金属基板来访问小体积的表面播种机 - 孔子（SPP）模式。我们引入了一个简单而定量的精确模型，该模型可以用来描述金属底物上纳米线激光器中的模式竞争。我们表明，铝底物可以降低ZnO纳米线激光器的激光阈值，而对于银基板，与介电底物相比，阈值增加。从这些发现中概括，我们做出了描述平面金属与半导体纳米线之间相互作用的预测，这些纳米线可以指导高度集成激光源的未来改进。
Semiconductor nanowire lasers can be subject to modifications of their lasing threshold resulting from a variation of their environment. A promising choice is to use metallic substrates to gain access to low-volume Surface-Plasmon-Polariton (SPP) modes. We introduce a simple, yet quantitatively precise model that can serve to describe mode competition in nanowire lasers on metallic substrates. We show that an aluminum substrate can decrease the lasing threshold for ZnO nanowire lasers while for a silver substrate, the threshold increases compared with a dielectric substrate. Generalizing from these findings, we make predictions describing the interaction between planar metals and semiconductor nanowires, which allow to guide future improvements of highly-integrated laser sources.
