标题： 亚波长双曲法布里-珀罗谐振腔中光学共振的恢复 显示英文标题

标题： Restoring of optical resonances in subwavelength hyperbolic etalons

摘要： 我们通过求助于不定超材料，解决了在深亚波长结构中恢复光学共振的基本问题。 我们证明，具有非常小介电常数的纳米厚度的双曲板表现出法布里-珀罗共振，并提供高对比度的光学角度过滤。 这是可能的，因为双曲色散允许真空辐射与纵向波数足够大的介质平面波耦合，从而在纳米厚度的板内产生光学驻波。 我们的发现可以成为一种新方法的基础，将光学器件缩小到深亚波长尺度。 显示英文摘要

摘要： We give a solution to the fundamental problem of restoring optical resonances in deep subwavelength structures by resorting to indefinite metamaterials. We prove that a nanometric thick hyperbolic slab with very small permittivities exhibits etalon resonances and provides high-contrast optical angular filtering. This is possible since the hyperbolic dispersion allows the vacuum radiation to couple with medium plane waves with longitudinal wavenumbers large enough to yield optical standing waves within the nanometric slab thickness. Our findings can form the basis of a novel way for shrinking optical devices down to the deep subwavelength scale.