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激光自1960年发表以来已20年了,这期间激光的应用技术进步快得惊人,一般激光的的光谱宽度狭,干涉性好,并具有接近电磁波的性质。因此,应用在计测方面,有效地利用干涉条纹的光学测量法与外差式称之为差频信号测量的电子技术,研制了过去所没有的新的测量方法与精密测量方法,并已经获得实用。激光的应用按其用途分类,有计测、加工、通信、信息处理,核聚变、医用等(见表1)。特别是在测量控制方面,很早就进行研究,目前是
The laser has been 20 years since it was published in 1960. During this period, the application of laser has progressed rapidly. The general laser has narrow spectral width, good interference and close electromagnetic wave. Therefore, the application of measurement techniques, the effective use of interference fringes of the optical measurement method and heterodyne called differential frequency signal measurement of electronic technology, developed in the past have no new measurement methods and precision measurement methods, and has been obtained practical. Laser applications classified according to their use, measurement, processing, communications, information processing, nuclear fusion, medical and so on (see Table 1). Especially in the measurement control, a long time ago to study, at present