论文标题
希尔伯特变换方法，用于测量由元信息赋予的线性和非线性相迁移
A Hilbert Transform method for measuring linear and nonlinear phase shifts imparted by metasurfaces
论文作者
论文摘要
对于广泛的应用，可以动态操纵传递光束的相位的非线性跨空面是引人入胜的。此类设备的受控操作需要在线性和非线性方向上进行光学传输阶段的准确测量，这是一个实验挑战性的任务。在本文中，我们表明，可以使用希尔伯特变换方法直接从简单的传输测量中提取此阶段信息，从而消除了对复杂，干涉实验设置的需求，并在不适合其他传统方法的条件下直接测量该相的直接测量。
Nonlinear metasurfaces that dynamically manipulate the phase of a passing light beam are of interest for a wide range of applications. The controlled operation of such devices requires accurate measurements of the optical transmission phase in both the linear and nonlinear regime, an experimentally challenging task. In this paper we show that this phase information can be extracted directly from simple transmission measurements, using a Hilbert transform approach, removing the need for complicated, interferometric experimental set-ups, and enabling direct measurements of the phase in conditions not suitable for other traditional approaches, such Z-scan measurements.
