High Degree of Optical Tunability of Self-Assembled Photonic-Plasmonic Crystals by Filling Fraction Modification
High Degree of Optical Tunability of Self-Assembled Photonic-Plasmonic Crystals by Filling Fraction Modification
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DOI：
10.1002/adfm.201001192
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发表时间：
2010-12-21
影响因子：
19
通讯作者：
Garcia-Martin, Antonio
中科院分区：
文献类型：
--
作者：
Lopez-Garcia, Martin;Galisteo-Lopez, Juan F.;Garcia-Martin, Antonio
二维光子-等离子体混合晶体的光学性质通过改变系统的介电组分进行微调。通过氧等离子体蚀刻控制沉积在金衬底上的球的单层中的介电组分的填充分数。这样做使得能够对系统的光学模式进行光谱调谐。实验上进行光学被动和主动的样品，显示出强烈的修改的样品的发射特性的可能性，包含发射器分布在球体内。如果采用适当的聚合物组分，则基本上修改样品的光学响应所需的球体直径的变化指向这些样品作为传感器或可调谐发射装置的潜在用途。
The optical properties of two-dimensional hybrid photonic-plasmonic crystals are fine-tuned by modifying the dielectric component of the system. The filling fraction of the dielectric component in monolayers of spheres deposited on gold substrates is controlled by means of oxygen-plasma etching. Doing so enables spectral tuning of the optical modes of the system. Experiments are performed on both optically passive and active samples showing the possibility for strong modification of the emission properties of samples containing emitters distributed within the spheres. The change in sphere diameter needed to substantially modify the sample's optical response points to a potential use of these samples as sensors or tunable emitting devices if appropriate polymeric components are employed.