Electromagnetic properties of photonic crystals with diamond structure containing defects
Electromagnetic properties of photonic crystals with diamond structure containing defects
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含缺陷金刚石结构光子晶体的电磁特性
DOI：
10.1557/jmr.2003.0309
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发表时间：
2003
影响因子：
2.7
通讯作者：
M. Takeda
中科院分区：
文献类型：
--
作者：
S. Kanehira;S. Kirihara;Y. Miyamoto;K. Sakoda;M. Takeda
采用光固化快速成型技术制备了具有金刚石结构的三维光子晶体，该光子晶体由分散在环氧树脂晶格中的TiO_2基陶瓷颗粒组成。金刚石结构在沿着Γ-K = 110 GHz方向的14.3-17.0 GHz范围内显示出光子带隙，这与使用平面波展开法计算的带隙接近。通过去除金刚石结构的单胞或在空气腔中插入晶格介质块，在金刚石结构中引入了两种晶格缺陷：空气腔和介质腔。在光子带隙中测量了缺陷处多次反射对毫米波透射率的影响。计算了缺陷的共振频率，并与测量结果进行了比较。
Three-dimensional photonic crystals with a diamond structure, which are composed of the TiO_2-based ceramic particles dispersed in an epoxy lattice, were fabricated by stereolithography. The diamond structure showed a photonic band gap in the 14.3–17.0 GHz range along the Γ-K 〈110〉 direction, which is close to the band calculation using the plain wave expansion method. Two types of lattice defects—air cavity and dielectric cavity—were introduced into the diamond structure by removing a unit cell of diamond structure or inserting a block of the lattice medium into the air cavity. The transmission of millimeter waves affected by multiple reflections at the defects was measured in the photonic band gap. Resonant frequencies in the defects were calculated and compared with the measurement results.