论文标题
超快的结构颜色变化含量氧化锡/二氧化钛1D光子晶体
Ultrafast structural color change in indium tin oxide/titanium dioxide 1D photonic crystal
论文作者
论文摘要
光子晶体可以在其结构中整合等离子体材料，例如依赖二锡氧化物（ITO）。利用ITO等离激子特性，可以在应用外部刺激时调整光子晶体的光子带隙。在这项工作中，我们通过射频溅射制造了一维多层光子晶体，并通过超快泵探针光谱触发了其光学响应。光激发后，我们观察到氧化钠锡的折射率的变化。这种效果已用于创建一个光子晶体，该光子晶体以超快的时间尺度更改其光子带隙。可以通过设计光子晶体来调整可见区域中的所有光学调制。
Photonic crystals can integrate plasmonic materials such as indium tin oxide (ITO) in their structure. Exploiting ITO plasmonic properties it is possible to tune the photonic band gap of the photonic crystal upon the application of an external stimuli. In this work, we have fabricated a one-dimensional multilayer photonic crystal via radiofrequency sputtering and we have triggered its optical response with ultrafast pump-probe spectroscopy. Upon photoexcitation we observe a change in the refractive index of indium tin oxide. Such effect has been used to create a photonic crystal that change its photonic bandgap in an ultrafast time scale. All optical modulation in the visible region, that can be tuned by designing the photonic crystal, has been demonstrated.
