1. Designing a Sample Holder and Optics for Use in Raman Spectroscopy Trevor Drury Maria Medrano Edmond Wilson Harding University

2. Who am I? Trevor Drury Mechanical Engineering undergraduate student at Harding and currently a sophomore From Leachville AR,

3. What was the challenge? Wiring laser and temperature controller Designing a mirror and lens array

4. Challenge for the design of mirror and lens array Capture all the light produced by the irradiated sample Focus the light from the sample onto the entrance slit Block the light from the laser diode

5. Current design Uses a concave mirror the laser is fired through and a small gold mirror the bounces the laser beam back into the sample to provide a higher intensity of light in the sample The light emitted from the sample strikes the concave mirror and is sent to the slit Before the slit there will be a lens that focuses emitted light to a point at the slit that fills the collimating mirror in the monochromator

6. Current arrangement

7. Other Ideas to test in the future Rapping the sample in a shiny material ( aluminum foil) Move the laser so that it is of to the side and make a new lenses and mirror system

8. The End