Alternative Form of Laser Beam Characterization

机译：激光束表征的另一种形式

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Careful characterization of laser beams used in materials processing such aswelding and drilling is necessary to obtain robust, reproducible processes and products. Recently, equipment and techniques have become available which make it possible to rapidly and conveniently characterize the size, shape, mode structure, beam quality (Mz), and intensity of a laser beam (incident power/unit area) as a function of distance along the beam path. This facilitates obtaining a desired focused spot size and also locating its position. However, for a given position along the beam axis, these devices typically measure where the beam intensity level has been reduced to I/ez of maximum intensity at that position to determine the beam size. While giving an intuitive indication of the beam shape since the maximum intensity of the beam varies greatly, the contour so determined is not an iso-contour of any parameter related to the beam intensity or power. In this work we shall discuss an alternative beam shape formulation where the same measured information is plotted as contour intervals of intensity.

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Knorovsky, G. A.; MacCallum, D. O.;
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年度 2000
页码 1-9
总页数 9
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Drilling; Lasers; Laser beam machining; Shape; Welding; Beam shaping;

机译：钻孔;激光;激光束加工;形状;焊接;光束整形;

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4. An Alternative Form of Laser Beam Characterization [C] . G.A. Knorovsky, D.O. MacCallum International Congress on Applications of Lasers Electro-Optics . 2000

机译：一种替代形式的激光束表征
5. Imaging of spatial non-uniformities and the characterization of defects in photovoltaic devices using a LASER-beam-induced-current (LBIC) mapping technique. [D] . Frey, Jonathan Mack. 2006

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6. Enhancing laser beam performance by interfering intense laser beamlets [O] . A. Morace, N. Iwata, Y. Sentoku, -1

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Alternative Form of Laser Beam Characterization

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