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 foc...

Picture the Problem A beam of diameter d1 passes through two le ...

The diameter of a collimated laser beam can be expanded or reduced by using two converging lenses,

Question:

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