激光束诊断及其在激光测速中的应用

随着激光技术的发展和应用的复杂化，人们把注意力深入集中到激光束剖面特性的质量。过去那些用烧蚀斑和目视分析散射光斑等方法已经远远不能适应现代激光工艺和应用对激光束质量评定的要求。本文介绍应用电子图像方法诊断激光束的新技术。并将其应用于激光测速的光束诊断和监控。为改善激光流动测量的性能提供了有效的手段。

AN APPLICATION OF LASER BEAM DIAGNOSTICS TO LASER VELOCIMETRY

In the recent development of laser technology, people paymore attention to concentrate on the quality of properties of the laser beam profiles. Some beam pattern measurement techniques such as visual beam patterns on a wall and burn patterns on thermo-graphic paper can not be suitable for the quantitative evaluation of laser beam quality in the modern laser technology and applications. A new technique of laserbeam diagnostics with the electronical image method is introduced and used to the laser velocimetry for the laser beam analysis, monitoring and control as an effective instrument to improve the properties of laser flow measurements .