2D quasiperiodic plasmonic crystals.
2D quasiperiodic plasmonic crystals.
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DOI:
10.1038/srep00681
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发表时间:
2012
影响因子:
4.6
通讯作者:
Giessen, Harald
中科院分区:
文献类型:
--
作者:
Bauer, Christina;Kobiela, Georg;Giessen, Harald
Nanophotonic structures with irregular symmetry, such as quasiperiodic plasmonic crystals, have gained an increasing amount of attention, in particular as potential candidates to enhance the absorption of solar cells in an angular insensitive fashion. To examine the photonic bandstructure of such systems that determines their optical properties, it is necessary to measure and model normal and oblique light interaction with plasmonic crystals. We determine the different propagation vectors and consider the interaction of all possible waveguide modes and particle plasmons in a 2D metallic photonic quasicrystal, in conjunction with the dispersion relations of a slab waveguide. Using a Fano model, we calculate the optical properties for normal and inclined light incidence. Comparing measurements of a quasiperiodic lattice to the modelled spectra for angle of incidence variation in both azimuthal and polar direction of the sample gives excellent agreement and confirms the predictive power of our model.
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