Chéron Élie, Félix Simon, Pagneux Vincent
Laboratoire d'Acoustique de l'Université du Mans, LAUM, CNRS UMR 6613, Le Mans Université, avenue Olivier Messiaen, 72085 Le Mans, France.
Phys Rev Lett. 2019 Mar 29;122(12):125501. doi: 10.1103/PhysRevLett.122.125501.
We report on a significant and broadband enhancement of the transmission through an opaque barrier, when placed between symmetric diffusive disordered slabs. The transmission enhancement is accompanied by a bimodal distribution of the transmission eigenvalues, and, for a given transmittance of the barrier, it finds an optimal value for a particular length of the disordered slabs. A simple model allows us to quantify the scalings between the parameters that show that the stronger the barrier, the stronger the maximum possible enhancement. The sensitivity to symmetry defects is also explored, displaying potential interest for wave based sensing.
我们报道了一种显著且宽带的透过率增强现象，当一个不透明屏障置于对称的扩散无序平板之间时会出现这种情况。透过率增强伴随着传输本征值的双峰分布，并且对于屏障的给定透过率，在无序平板的特定长度下它会达到一个最优值。一个简单模型使我们能够量化各参数之间的标度关系，表明屏障越强，最大可能的增强就越强。我们还探究了对对称性缺陷的敏感度，这显示出在基于波的传感方面具有潜在的应用价值。
