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arXiv 0810.5735physics.optics
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双锥Dirac点的光学实现

Realization of Dirac Point with Double Cones in Optics

Li-Gang Wang, Zhi-Guo Wang, Shi-Yao Zhu

摘要:

光场具有双锥结构的狄拉克点,是石墨烯中狄拉克费米子的光学类比,可以在光学均匀的超材料中实现。光学系统中狄拉克点实现的条件是折射率从负变到零再变到正。我们的解析和数值分析证实,与石墨烯中的电子类似,狄拉克点附近的光场具有伪扩散性质,服从1/L标度律,其中L是光在介质中的传播距离。

英文摘要:

The Dirac point with a double-cone structure for optical fields, an optical analogy Dirac fermions in graphene, can be realized in optically homogenous metamaterials. The condition for the realization of Dirac point in optical systems is the varying of refractive index from negative to zero and then to positive. Our analytical and numerical analysis have verified that, similar to electrons in graphene, the light field near the Dirac point possesses of the pseudodiffusive property, obeying the 1/L scaling law, where L is the propagating distance of light inside the media.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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