You need to increase the distance that a KrF laser at 0.248 µm with a beam...

You need to increase the distance that a KrF laser at 0.248 µm with a beam radius of 0.322 mm can reach. To do so you need to design a beam expander to enlarge the beam radius to 2.806 mm. You are given second lens f2= 71.4cm. Do both Galilean and Keplerian expander and draw the design. State what f input lens is required and the length of the system. Make a diagram for each system. (b) What is the Rayleigh range before and after the beam is expanded . (c) What is the spot size at a distance of 139.8 m for both the original and expanded beam? Distances are from the laser for the original and from the beam expander output second case.

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genius_generous answered 2 years ago

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