论文部分内容阅读
双频激光干涉仪是激光干涉仪的一种,主要用于大长度精密测量,例如:1.可作为大长度的自然计量基准以代替现行的三米杆尺实物计量基准,既能提高基准精度,又便于保存和复现,有利于战备;2.可作为大地测量的计量标准,至少可以使测量误差减小一个数量级(即减少一位数字);3.可用于考察地球外壳的形变,大大提高地震预报的准确度;4.可直接用于重型机械加工中的尺寸测量,解决目前许多大尺寸无法测量的问题;5.可用于国防建设的若干方面,为国防科学研究提供可靠数据等。所谓激光干涉仪,就是以激光为光源的干涉仪。以单频激光管发出的具有单一频率的激光为光源的干涉仪叫做单频激光干涉仪;以双频激光管发出的
Dual-frequency laser interferometer is a kind of laser interferometer, mainly used for large-length precision measurement, for example: 1. Can be used as a large length of the natural measurement benchmarks to replace the existing three-meter rod physical measurement benchmarks, both to improve the benchmark accuracy , And easy to save and reappear, is conducive to combat readiness; 2 can be used as a measure of geodetic measurement, at least reduce the measurement error by an order of magnitude (that is, reduce the number of one); 3 can be used to investigate the Earth’s shell deformation, Improve the accuracy of earthquake prediction; 4. Can be used directly for the size measurement of heavy machinery processing, to solve many large-scale unmeasurable problems; 5. Can be used for some aspects of national defense to provide reliable data for the national defense scientific research. The so-called laser interferometer, is the laser as the light source of the interferometer. A single frequency laser tube emits a single frequency laser as the light source of the interferometer called the single-frequency laser interferometer; dual-frequency laser tube issued