一、概述随着电子计算机和激光技术的普及,把磁信息或光信息存贮在磁盘或光盘上的新技术获得日益广泛的应用。所谓信息存贮,以激光信息存贮为例子,就是用激光打光的方法,在光盘上打上一圈又一圈的凹穴,做成激光录象机(图1),把有图象或有声音的信号处理成适合作为光学记录的脉冲信号,经过放大后,驱动光调制器,使射过光调制器的光束,随着输入脉冲的 I. Overview With the popularization of electronic computer and laser technology, the new technology of storing magnetic information or optical information on a magnetic disk or a compact disk is gaining more and more widespread application. The so-called information storage, laser information storage, for example, is the method of laser lighting, lapped on the disc lap after lap, made of laser video recorder (Figure 1), the image or The sound signal is processed into a pulse signal suitable for optical recording. After being amplified, the light modulator is driven so that the light beam that has been emitted through the light modulator,