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The formation of a beam propagating in a slow-expansion mode on diffraction of a circular segment-shaped laser beam | SpringerLink
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![In above figure, a laser beam of power 4.60W and diameter D = 2.60mm is directed upward at one circular face (of diameter d<2.60mm ) of a perfectly reflecting cylinder. The cylinder In above figure, a laser beam of power 4.60W and diameter D = 2.60mm is directed upward at one circular face (of diameter d<2.60mm ) of a perfectly reflecting cylinder. The cylinder](https://d1hj4to4g9ba46.cloudfront.net/questions/1779074_998cb784c6454c008ac5e0848062e5f5.png)
In above figure, a laser beam of power 4.60W and diameter D = 2.60mm is directed upward at one circular face (of diameter d<2.60mm ) of a perfectly reflecting cylinder. The cylinder
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