Li Jiafang, Jia Baohua, Zhou Guangyong, Gu Min
Opt Express. 2006 Oct 30;14(22):10740-5. doi: 10.1364/oe.14.010740.
Incorporating active media into three-dimensional (3D) photonic crystals (PCs) is a useful step towards exploring the functionalities of PCs. Here we report, for the first time, on the fabrication of 3D woodpile PCs with a commercial PbSe quantum dot (QD) composite material by using the two-photon polymerization technique. The fabricated crystals possess photonic band gaps in the near-infrared wavelength region, which have a suppression rate of ~50% in the stacking direction, measured with an angle-resolved Fourier-transform infrared spectrometer. The woodpile structures fabricated under different conditions are also characterized by using a scanning near-field optical microscope, providing a useful feedback towards optimizing the fabrication of 3D woodpile PCs in QD composites.
将活性介质引入三维（3D）光子晶体（PCs）是探索光子晶体功能的有益一步。在此，我们首次报道了通过双光子聚合技术，使用商用PbSe量子点（QD）复合材料制备3D木堆光子晶体。所制备的晶体在近红外波长区域具有光子带隙，用角度分辨傅里叶变换红外光谱仪测量，其在堆叠方向上的抑制率约为50%。还使用扫描近场光学显微镜对在不同条件下制备的木堆结构进行了表征，为优化QD复合材料中3D木堆光子晶体的制备提供了有用的反馈。
