Study of laser beam deflection tolerance of divergent sphere Gaussian wave
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摘要: 用锥镜产生的无衍射光可以具有大光学口径和光学数值孔径,使无衍射光对入射光束的偏心有一定的包容能力.为了研究无衍射光对激光束角向漂移(角漂)的包容性能,采用发散球面波入射光束,通过理论分析和试验验证可知,发散球面波的无衍射光对激光束角漂具有良好的包容性能.结果表明,此方法产生的无衍射光可适于作中、短距离连续空间直线度误差测量的直线基准.Abstract: Because of the large beam diameter and special characteristics of the non-diffracting beam produced by an axicon,the non-diffracting beam can tolerate the eccentricity of the incident laser beam's axis to the axicon.For studying the additional tolerance property to the incident light beam's deflection,adopting a kind of incident divergent sphere Gaussian wave,it is proved that the divergent sphere Gaussian wave can tolerate the eccentricity of the incident laser beam's axis through theoretical analysis and practical tests.The obtained conclusion is that the axis of the non-diffracting beam produced by an axicon is very stable and can be adopted as the datum line to measure the spatial straightness error in continuous working distance,which may be short,medium or long.
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