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arXiv 0712.2673physics.optics
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调制光子晶格中的无缺陷表面态

Defect-free surface states in modulated photonic lattices

Ivan L. Garanovich, Andrey A. Sukhorukov, Yuri S. Kivshar

摘要:

我们预测,调制光子晶格的接口可以支持一种新型的通用表面态。这样的线性表面状态出现在截断的,但在其他方面完美的(无缺陷)晶格作为晶格势的周期性调制的直接结果,没有任何嵌入或非线性引起的缺陷。这与所有先前的研究形成鲜明对比,其中线性或非线性晶格中的表面状态,例如Tamm或Shockley型表面状态,总是与某种类型的结构或诱导表面缺陷的存在相关联。

英文摘要:

We predict that interfaces of modulated photonic lattices can support a novel type of generic surface states. Such linear surface states appear in truncated but otherwise perfect (defect-free) lattices as a direct consequence of the periodic modulation of the lattice potential, without any embedded or nonlinearity-induced defects. This is in a sharp contrast to all previous studies, where surface states in linear or nonlinear lattices, such as Tamm or Shockley type surface states, are always associated with the presence of a certain type of structural or induced surface defect.

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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