PURPOSE:To make the judgment of the quality of a laser beam objective, by showing various analysis data on the distribution chart of the cross sectional intensity of the laser beam at orthogonal two axes. CONSTITUTION:The intensity of a laser beam at two orthogonal axes in the cross sectional...
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If the beam quality is poor, then the focused spot (or line) on the wafer is not Gaussian in profile and the tails of that profile contain more energy than ideal. Those bigger tails result in at least some of the signal being collected from outside the area of interest, thereby ...
The laser power, beam quality, and compactness of CO2 and Nd:YAG laser systems are increasing while their prices are going down, where productivity, cost reduction, and residual quality of the cutting process are the main factors forcing its development. Further advantages in using lasers for ...
estimated focal point (identified as zero-zero) and proceeding at increments of 0.03126 in. down to 0.375 in. below the estimated focal point. Thechart in Figure 4 shows the plot of the beam size, and Figures 5 and 6 show cross-section measurements of laser beam power near the focal ...
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The flow chart of the FEM simulation is shown in Fig. 5. In this method, the results Conclusions A 3-D computer simulation and an on-line experimental investigation of sheet metal bending using laser beam scanning have been performed. The following conclusions have been reached. Acknowledgements...
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Create the vector design. Vector files specify the points, curves, lines, and shapes that must be followed by the laser beam making the cut. A good vector design is a prerequisite for all laser-cutting procedures and has a direct impact on the quality of the finished item. ...