Designing a Sample Holder and Optics for Use in Raman Spectroscopy

Trevor DruryMaria MedranoEdmond Wilson

Harding University

Who am I? • Trevor Drury• Mechanical Engineering undergraduate student at

Harding and currently a sophomore • From Leachville AR,

What was the challenge?

• Wiring laser and temperature controller• Designing a mirror and lens array

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

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

Current arrangement

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

The End