Mechanically flexible polymeric compound one-dimensional photonic crystals for terahertz frequencies
Mechanically flexible polymeric compound one-dimensional photonic crystals for terahertz frequencies
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DOI：
10.1063/1.3341309
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发表时间：
2010-03-15
影响因子：
4
通讯作者：
Koch, Martin
中科院分区：
文献类型：
--
作者：
Jansen, Christian;Wietzke, Steffen;Koch, Martin
我们描述了基于高折射率聚合物化合物和纯聚合物的交替层来制备和表征太赫兹频率的全柔性一维光子晶体。由于高介电常数对比度和低本征材料吸收，即使是低数量的层也会产生明显的人工带隙结构，中心频率反射率接近于1。除了高过滤性能外，聚合物复合一维光子晶体还可以通过在机械柔性结构上施加曲率来进行光束整形，因为当结构弯曲时，光谱特性几乎保持不变。
We describe the fabrication and characterization of fully flexible one-dimensional photonic crystals for terahertz frequencies based on alternating layers of a highly refracting polymeric compound and a pure polymer. Due to the high permittivity contrast and low intrinsic material absorption, even a low number of layers yields structures with a pronounced artificial band gap, with a center frequency reflectivity close to unity. Besides the high filter performance, the polymeric compound one-dimensional photonic crystals can be employed for beam shaping by applying a curvature to the mechanically flexible structures, since the spectral characteristics remain nearly unchanged when the structure is flexed.