Resonant optical scattering in nanoparticle-doped polymer photonic crystals
Resonant optical scattering in nanoparticle-doped polymer photonic crystals
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DOI：
10.1103/physrevb.80.201103
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发表时间：
2009-11-01
影响因子：
3.7
通讯作者：
Spahn, P.
中科院分区：
文献类型：
--
作者：
Baumberg, J. J.;Pursiainen, O. L.;Spahn, P.
宽带高光谱技术用于测量宽光谱带宽上的相干光学反向散射，显示了剪切组装聚合物光子晶体光子带隙周围光子传输平均自由程的共振抑制。通过掺杂位于光子晶格内特定点的碳纳米级散射体，光子平均自由程和光学穿透率之间的比率从 10 调整到 1，以牺牲反向散射为代价增强前向散射。当前的任何理论都无法解释不同偏振的后向散射强度。
A broadband hyperspectral technique is used to measure the coherent optical backscatter across a wide spectral bandwidth, showing the resonant suppression of the photon transport mean free path around the photonic bandgap of a shear-assembled polymer photonic crystal. By doping with carbon nanoscale scatterers that reside at specific points within the photonic crystal lattice, the ratio between photon mean free path and optical penetration is tuned from 10 to 1, enhancing forward scatter at the expense of back-scatter. The back-scattering strength of different polarisations is not explained by any current theory.