论文标题
从木桩光子晶体中受控缺陷的散射
Scattering from controlled defects in woodpile photonic crystals
论文作者
论文摘要
具有足够高的折射率对比度的光子晶体显示部分或完整的带隙。然而，超物质中的缺陷导致散布的光散射和灭绝。阳性和负缺陷量可能有助于这种光学扰动。在这项研究中，我们制造并表征了三维木桩光子晶体，并具有伪带式的近红外光学波长。通过直接激光写作，我们故意在周期性结构中引入随机缺陷。我们表明，我们可以通过考虑无序结构和常规结构之间的差异来对随机缺陷散射进行建模。我们的发现为更好地控制和理解缺陷在光子材料中的作用而铺平了道路，这对于它们在潜在应用中的可用性至关重要。
Photonic crystals with a sufficiently high refractive index contrast display partial or full band gaps. However, imperfections in the metamaterial cause light scattering and extinction of the interfering propagating waves. Positive as well as negative defect volumes may contribute to this kind of optical perturbation. In this study, we fabricate and characterize three-dimensional woodpile photonic crystals, with a pseudo-bandgap for near-infrared optical wavelengths. By direct laser writing, we intentionally introduce random defects in the periodic structure. We show that we can model random defect scattering by considering the difference between the disordered and the regular structure. Our findings pave the way towards better control and understanding of the role of defects in photonic materials that will be crucial for their usability in potential applications.
