材料科学
光子晶体
折射率
传递矩阵法(光学)
带隙
谱线
介电常数
光电子学
光子学
光学
电介质
天文
物理
作者
R. Amri,S. Sahel,C. Manaa,L. Bouaziz,D. Gamra,M. Lejeune,M. Clin,K. Zellama,H. Bouchriha
标识
DOI:10.1016/j.spmi.2016.05.015
摘要
Hybrid One-dimensional photonic crystal coated from a mixture of an organic compound (HMDSO) and oxygen (O2) is elaborated by PECVD technique. The originality of the method consists in obtaining layers of different permittivity with the same gas mixture, but with different flow. The change in flow is optimized to obtain organic/inorganic layers of good quality with high and low refractive index of 2.1 and 1.4 corresponding respectively to HMDSO and SiO2 materials as assigned by IR measurement. Evidence of the photonic band gap is obtained by measuring the transmissions and reflections spectra which show that it appears only after 13 periods with a width of 325 nm corresponding to energy 3.8 eV. We have also introduced a defect in this photonic structure by changing the thickness of central layer, and observed the presence of a frequency mode corresponding to this defect. Our results are interpreted by using a theoretical model based on transfer matrix wich well reproduced the experimental data.
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