1. Building and Testing an XUV Polarimeter Raymond Rios XUV Research Group 16 March 2002 Brigham Young University

2. Extreme Ultraviolet Light What is it? Why do we study it? BYU research in XUV Wavelength = 19.5 nm

3. Purpose of Optical Constants Analyze information from mirrors Taylor multilayer mirrors Literature lacks reliable constants

4. Polarimeter Polarimeter vs Ellipsometry

5. Physical Requirements for the Polarimeter Must be in a vacuum Reliable Monochromatic XUV Source Aperature

6. Technical Concerns Align the system Find the point of steady light reflection Creating program that analyzes data

7. Taking mesurements Measure at specific wavelength Fit the derived equations to our results by varying the n

8. Present Challenges Lack of a reliable source Buggy Program, Negative sign problem

9. Future Goals Work with multilayer mirrors Analyzing the optical constants of Uranium Oxide among other compounds for mirrors