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中国物理学会期刊

含单负介质层受阻全内反射结构的光子隧穿现象研究

CSTR: 32037.14.aps.55.2714

Photon tunneling in a frustrated-total-internal-reflection structure composed of a single negative material

CSTR: 32037.14.aps.55.2714
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  • 利用稳定相位理论得到了光子穿越含单负介质层受阻全内反射结构的隧穿时间以及光子穿透光学势垒后产生的横向位移.分析结果表明,当势垒为单负介质时,光子隧穿可能表现出负的隧穿时间和负的横向位移.隧穿时间和横向位移存在Hartman效应,使得光子隧穿过程具有超光速性质.此外,基于TM波和TE波通过负介电常数介质和负磁导率介质势垒产生的横向位移的方向正好相反,得到了一种有效的区分两类单负介质的方法.

     

    The tunneling time and lateral shift of photon tunneling in a frustrated-total-internal-reflection structure composed of single negative material is derived by employing stationary-phase approximation. It is found that the tunneling time and the lateral shift are negative when the barrier is a single negative material. On account of the Hartman effect of the tunneling time and the lateral shift, the photon tunneling shows the superluminal property. An effective approach to distinguish ε-negative material and μ-negative material is proposed based on the fact that TE- and TM-polarized incident beams experience opposite lateral shift.

     

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