论文标题
使用数字微型摩尔设备的全数字stokes极化
All-Digital Stokes Polarimetry with a Digital Micro-mirror Device
论文作者
论文摘要
Stokes极仪法被广泛用于提取光场的极化结构,通常是从六个测量值中提取的,尽管它只能从四个测量中提取。为了测量所需的强度,大多数方法基于光学偏振组件。在这项工作中,我们提出了一种全数字方法,可以快速衡量所有四个强度,而无需任何移动组件。我们的方法采用极化光栅(PG)同时将传入模式投射到左和右圆极化状态,然后使用对极化不敏感的数字微骨器设备(DMD),以数字方式引入了以获取其余两个极化状态的相位延迟。我们演示了如何将该技术应用于光场的SOP,向量和模式相位,而无需任何移动组件,并与理论表现出极好的一致性,以说明快速,实时的极性学。
Stokes polarimetry is widely used to extract the polarisation structure of optical fields, typically from six measurements, although it can be extracted from only four. To measure the required intensities, most approaches are based on optical polarisation components. In this work, we present an all-digital approach that enables a rapid measure of all four intensities without any moving components. Our method employs a Polarisation Grating (PG) to simultaneously project the incoming mode into left- and right-circular polarised states, followed by a polarisation-insensitive Digital Micromirror Device (DMD), which digitally introduces a phase retardance for the acquisition of the remaining two polarisation states. We demonstrate how this technique can be applied to measuring the SoP, vectorness and intra-modal phase of optical fields, without any moving components and shows excellent agreement with theory, illustrating fast, real-time polarimetry.