Enhancement of omnidirectional total-reflection wavelength range by using one-dimensional ternary photonic bandgap material
Enhancement of omnidirectional total-reflection wavelength range by using one-dimensional ternary photonic bandgap material
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DOI：
10.1364/josab.23.002566
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发表时间：
2006-12-01
影响因子：
1.9
通讯作者：
Ojha, Sant Prasad
中科院分区：
文献类型：
--
作者：
Awasthi, Suneet Kumar;Malaviya, Usha;Ojha, Sant Prasad
在这里，我们通过理论分析证明了一种新的方法，通过使用三元周期结构（即，构成晶格的周期的三个材料层）。使用二元（BaF 2/PbS）周期性结构的全向全反射范围增强了108 nm，当该结构通过在每两层之间填充一薄层ZrO 2来修改时，构成晶格的周期。还观察到向更高波长的onmidirectional范围的移位。当夹心层为CeF 3时，在该范围内的增强为120 nm。由于夹层非常薄，反射器的尺寸不会有任何显着增加，与异质结构光子晶体（PC）的情况相反，其中两个或更多个PC聚集在一起以实现增强。(c)2006年美国光学学会。
Here we demonstrate by theoretical analysis a novel way to enhance the onmidirectional total-reflection wavelength range in one-dimensional photonic bandgap material by using a ternary periodic structure (i.e., three material layers constituting a period of the lattice). The onmidirectional total reflection range using a binary (BaF2/PbS) periodic structure was enhanced by 108 nm when the structure was modified by sandwiching a thin layer of ZrO2 between every two layers, constituting a period of the lattice. A shift of the onmidirectional range toward higher wavelengths was also observed. When the sandwiched layer was CeF3, the enhancement in the range was 120 nm. As the sandwiched layer is very thin, there will not be any significant increase in the size of the reflector, contrary to the case of heterostructured photonic crystals (PCs) where two or more PCs are clubbed together to achieve enhancement. (c) 2006 Optical Society of America.