A simple method for testing laser beam c
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D.S. Mehta; H.C. Kandpal
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Article
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1998
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Elsevier Science
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English
โ 267 KB
A simple and improved method is proposed for testing laser beam collimation by a new type of grating, comprising concentric equilateral triangles and the mirror images of these triangles. Although this type of grating possesses onedimensional periodicity in a particular direction and inherent defect