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Wide-field-of-view narrow-band spectral filters based on photonic crystal nanocavities

机译:基于光子晶体纳米腔的宽视场窄带光谱滤波器

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摘要

We describe a novel approach to implementing wide-field-of-view narrow-band spectral filters, using an array of resonant nanocavities consisting of periodic defects in a two-dimensional three-material photonic-crystal nanostructure. We analyze the transmissivity of this type of filter for a range of wavelengths and in-plane incidence angles as a function of the defect's refractive index, the number of layers in the photonic-crystal reflectors, and the period of the defects and find that this structure diminishes the angular sensitivity of the resonance condition relative to that of a standard multilayer filter.
机译:我们描述了一种新的方法来实现宽视野窄带光谱滤光片,它使用了由二维三材料光子晶体纳米结构中的周期性缺陷组成的谐振纳米腔阵列。我们分析了这种类型的滤光片在一定范围的波长和面内入射角下的透射率,该透射率与缺陷的折射率,光子晶体反射器中的层数以及缺陷的周期有关。相对于标准多层滤波器,这种结构减小了共振条件的角灵敏度。

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