The diameter of a collimated laser beam can be expanded or reduced by using two converging lenses, with focal lengths AElig 1 and AElig 1, mounted a distance AElig 1 AElig 2 from each other, as shown in FIGURE 27 33 What is the ratio of the two beam diameters, (d1 d2), expressed in terms of the focal lengths In figure 27 33 1 d, fi f

Question: The diameter of a collimated laser beam can be expanded or reduced by using two converging lenses, with focal lengths Æ1 and Æ1, mounted a

The diameter of a collimated laser beam can be expanded or reduced by using two converging lenses, with focal lengths Æ’1 and Æ’1, mounted a distance Æ’1 + Æ’2 from each other, as shown in FIGURE 27-33. What is the ratio of the two beam diameters, (d1 / d2), expressed in terms of the focal lengths?
In figure 27-33

1 d, -fi + f-

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