Title: Absorber of Topologically Structured Light Show Chinese title

Title: 拓扑结构光的吸收器

Abstract: Polarization- and wavelength-sensitive absorbers for homogeneous electromagnetic waves are crucial in photovoltaics, imaging and telecommunications. Here, we report on an absorber selective to the topological structure of light. An electromagnetic beam or pulse containing polarization singularities can be fully dissipated by the absorber, while plane waves are rejected regardless of their polarization. The absorber comprises a conical mirror coaxial with the incident propagating beam, which the mirror converts into a standing wave defined by the geometrical Pancharatnam-Berry phase accumulated upon reflection on the mirror. If a "nanowire" absorber is placed along the axis of the cone, singularly-polarized light can create an antinode of the standing wave at the absorber and nearly perfect dissipation of the light's energy is achievable regardless of the wavelength. The selective absorber of topologically structured light is of interest for energy harvesting, detection, filtering, and telecommunications applications. Show Chinese abstract

Abstract: 偏振和波长敏感的均匀电磁波吸收器在光伏、成像和电信中至关重要。 在这里，我们报告了一种对光的拓扑结构具有选择性的吸收器。 包含偏振奇点的电磁束或脉冲可以被该吸收器完全耗散，而平面波无论其偏振如何都会被拒绝。 该吸收器包括一个与入射传播束共轴的圆锥镜，该镜将入射束转换为由几何潘查拉特纳姆-贝里相位定义的驻波，该相位在镜面上反射时累积。 如果在圆锥的轴线上放置一个“纳米线”吸收器，具有奇异偏振的光可以在吸收器处产生驻波的波腹，并且无论波长如何，都可以实现光能的几乎完美耗散。 对拓扑结构光的选择性吸收器在能量收集、检测、过滤和电信应用中具有重要意义。