Progress in Study and Application of Optical Field Modulation Technology Based on Liquid Crystal Spatial Light Modulators (Invited)
Progress in Study and Application of Optical Field Modulation Technology Based on Liquid Crystal Spatial Light Modulators (Invited)
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DOI：
10.3788/gzxb20215011.1123001
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发表时间：
2021-11-01
影响因子：
0.6
通讯作者：
Yao Boli
中科院分区：
文献类型：
--
作者：
Zhou Yuan;Li Runze;Yao Boli
光场作为一种电磁波，可以用振幅、相位和偏振参数来描述。空间光场调制技术通过对这些参数进行调制，能够产生新颖的空间结构光场。与其他类型的调制器件相比，液晶空间光调制器具有衍射效率高、调制像素数可达数百万、实时动态调制等优点。它已成为空间光场调制的主流器件。本文首先介绍了光场调制技术的原理和算法，包括单参数调制、复振幅调制和利用液晶空间光调制器进行多参数调制。举例说明了这些光调制技术在全息光镊、光学显微镜、光信息存储、光学微加工、散射介质后成像和光通信等方面的应用。然后讨论了该技术需要解决的问题、发展趋势和发展前景。本文旨在帮助研究人员系统地了解基于液晶空间光调制器的光场调制技术的原理、最新研究进展和潜在应用，为该领域的研究提供参考。
As an electromagnetic wave,optical field can be described by using parameters of amplitude, phase and polarization. Spatial optical field modulation technology enables to generate novel spatially structured optical field by modulating these parameters. Compared with other types of modulation devices, the liquid crystal spatial light modulator has the advantages of high diffraction efficiency, millions of modulated pixels,and real-time dynamic modulation. It has become the mainstream device for spatial optical field modulation. In this paper,we first give an introduction to the principles and algorithms of optical field modulation technology, including single-parameter modulation, complex amplitude modulation, and multi-parameter modulation by using the liquid crystal spatial light modulators. Some applications of these optical modulation technologies in holographic optical tweezers,optical microscopy, optical information storage, optical micromachining, imaging behind scattering media, and optical communication are exampled. Then we discuss the problems to be resolved,the development trends and the development prospects of the technology. The purpose of this paper is to help researchers systematically understand the principle,the latest research progress and the potential application of the optical field modulation technology based on the liquid crystal spatial light modulators,and provide some references for research in this field.