论文部分内容阅读
采用超高真空电子束蒸发制备了一维紫外、可见光波段光子晶体.研究了在石英衬底上不同周期Ag/SiO2体系对光子带隙的影响.带隙位置与理论计算结果符合.发现二氧化硅层的厚度对带隙位置和银层的透过率有较大影响,厚度的增加降低了反射率,从而使光子带隙更加明显,当厚度达到12层时观察到清晰的光子带隙.
One-dimensional UV-visible and photonic band photonic crystals were prepared by ultra-high vacuum electron beam evaporation.The effect of Ag / SiO2 system on photonic bandgap at different periods on quartz substrate was studied.The bandgap position was in agreement with the theoretical calculation.It was found that the oxidation of di The thickness of the silicon layer has a great influence on the bandgap position and the silver layer transmittance. The increase of the thickness reduces the reflectivity, which makes the photonic band gap more obvious. When the thickness reaches 12 layers, a clear photonic bandgap is observed.