Development of the photonic crystal in mili wavelength and visible wavelength region

对于Si3N4介质球的二维阵列，测量了从25G赫兹到60G赫兹的微波透过率。观察到的透过率精细结构与理论计算符合得很好。分析了介质球单层中的光子能带结构，其特征是具有与单个介质球内部建立的走廊模一样的有限寿命，同时具有在层内从一个球跳到另一个球的紧束缚特性。光的透射率和反射率的相位直接反映了态的光子密度。研究了有序聚苯乙烯微球的光学性质。实验观测的透射谱与理论结果吻合较好。用扫描近场光学显微镜研究了光子带效应。

For the two-dimensional array of Si3N4 dielectric spheres, the transmissibility of microwave light was measured from 25 G Hz to 60 G Hz. The observed fine structure of the transmissibility was found to be in very good agreement with the theoretical calculation. The analysis was made to deduce the structure of the photonic bands in the monolayr of the dielectric spheres, which were characterized by the finite lifetime as in the gallery modes set up inside a single dielectric spheres and at the same time by the tight binding character of hopping from a sphere to sphere within the layr. The phase of the transmissibility and the reflectivity of the light had a direct information of the photonic density of states.Optical properties have been studied on the ordered polystirene microsphere lyers. Experimentally observed transmission spectra are in good agreement with theoretical results. The photonic band effect has been also investigated by means of scanning near-field optical microscopy.