固-固有限周期声子晶体中SH波全反射隧穿的机理

Mechanism of SH wave total reflection tunnel effect in 1D solid-solid limited cycle phononic crystal

利用边界条件推导出SH波在一维固-固有限周期声子晶体中的转移矩阵,并用倏逝波的概念和多波束干涉理论,从理论上解释了一维固-固有限周期声子晶体全反射隧穿效应产生的物理机理,得出了全反射隧穿峰带波长满足的解析公式。利用解析公式和转移矩阵研究了一维固-固有限周期声子晶体中SH波的全反射隧穿效应,结果发现两种方法得出的结论是吻合的。

Using boundary conditions, the transfer matrix of SH wave in 1D solid-solid phononic crystal is derived. Using the evanescent wave and the beam interference theory, the physical mechanism of SH wave total reflection tunnel effect in 1D solid-solid limited cycle phononic crystal is explained,the analyt- ical formulas is deduced. Study SH wave total reflection tunnel effect using the analytical formulas and the transfer matrix and discovered their results are in good agreement.