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Light trapping at Dirac point in 2D triangular Archimedean-like lattice photonic crystal

机译:二维三角形类阿基米德点阵光子晶体中Dirac点处的光陷阱

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摘要

Optical cavities and waveguides are critical parts of modern optical devices. Traditionally, optical cavities and waveguides rely on photonic bandgaps, or total internal reflection, to achieve light trapping. It has been reported that a novel light trapping, which exists in triangular and honeycomb lattices, is attributed to the so-called Dirac point. Our analysis reveals that 2D triangular Archimedean-like lattice photonic crystals also can support this Dirac mode with similar characteristics. This is a new type of localized mode with a different algebraic field profile at a different specified Dirac frequency, which is also beyond any complete photonic bandgap. The new wave localization has different features and can be applied to the design of new optical devices. (C) 2016 Optical Society of America
机译:光腔和波导是现代光学设备的关键部分。传统上,光腔和波导依靠光子带隙或全内反射来实现光捕获。据报道,存在于三角形和蜂窝状晶格中的新型光陷阱归因于所谓的狄拉克点。我们的分析表明,二维三角类阿基米德像点晶格光子晶体也可以支持具有相似特征的狄拉克模式。这是一种新型的局部化模式,在不同的指定狄拉克频率下具有不同的代数场轮廓,这也超出了任何完整的光子带隙。新波定位具有不同的特征,可以应用于新的光学设备的设计。 (C)2016美国眼镜学会

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