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Unformatted text preview: beam cross-section. How would you measure the true beam shape? What is the beam width? What is the divergence angle ? 2. Pass the beam through a convex lens. Use multiple beam scans to measure the location of the focus. Compare this to the nominal focal length written on the lens. Repeat for a concave lens. 3. Using two lenses in series, construct a beam expander with a collimated output beam of larger diameter than the input beam. Measure the resulting beam width and determine the magnification. Compare to the prediction from lens geometry. CAUTION: Make sure not to exceed the translation stage limits! Turn off the motor control first to rotate the motor shaft by hand....
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This note was uploaded on 12/29/2011 for the course PHYSICS 375 taught by Professor Eno during the Spring '11 term at Maryland.
- Spring '11