Opt Lett. 2018 Jun 15;43(12):2860-2863. doi: 10.1364/OL.43.002860.
The Letter proposes a system for the spatial modulation of light in amplitude and phase at kilohertz frame rates and high spatial resolution. The focus is fast spatial light modulators (SLMs) consisting of continuously tiltable micromirrors. We investigate the utilization of such SLMs in combination with a static phase mask in a 4f setup. The phase mask enables the complex beam modulation in a linear optical arrangement. Furthermore, adding so-called phase steps to the phase mask increases both the number of image pixels at constant SLM resolution and the optical efficiency. We illustrate our concept based on numerical simulations.
该信件提出了一种在千赫兹帧率和高空间分辨率下对光的幅度和相位进行空间调制的系统。重点是快速空间光调制器（SLM），由可连续倾斜的微镜组成。我们研究了在 4f 系统中结合静态相位掩模使用这种 SLM 的情况。相位掩模使复杂光束在线性光学装置中进行调制。此外，在相位掩模上添加所谓的相位步长可以在保持 SLM 分辨率不变的情况下增加图像像素的数量并提高光学效率。我们基于数值模拟来说明我们的概念。
