一、引言磁光器件系指利用材料的磁光效应制作的在光频下应用的各种器件。早在五十年代,人们广泛应用磁光效应观察磁畴。近年来,随着激光、计算机存貯器等技术的发展,引起人们对磁光效应的重视。图1给出在“物理学文摘”中关于“磁光效应”论文的相对数。在激光的未来应用中,除探索各种新型激光器和接收器件之外,激光束的参数,如强度、方向、偏转的快速控制是重要的问题。本文着重介绍利用磁光法拉第效应可以制作的种种控制激光束的器件。 First, the introduction of magneto-optical devices refers to the use of materials produced by the magneto-optical effect in the light of the application of various devices. As early as the fifties, the magneto-optical effect was widely used to observe magnetic domains. In recent years, with the development of technologies such as laser and computer memory, people pay more attention to magneto-optical effect. Figure 1 shows the relative numbers of “magneto-optic effect” papers in “Abstracts of Physics”. In future laser applications, in addition to exploring various new types of lasers and receiving devices, the rapid control of laser beam parameters, such as intensity, direction, and deflection, is an important issue. This article focuses on the use of magneto-optical Faraday effect can produce a variety of control laser beam devices.