Publications Details

Plasma and radiation detection via fiber interferometry

Laros, James H.; Bell, Kate S.; Fox, Brian P.; Jones, Scott C.; Knapp, Patrick K.; Gomez, Matthew R.; Porwitzky, Andrew J.; Laity, George R.

Photonic Doppler velocimetry tracks motion during high-speed, single-event experiments using telecommunication fiber components. The same technology can be applied in situations where there is no actual motion, but rather a change in the optical path length. Migration of plasma into vacuum alters the refractive index near a fiber probe, while intense radiation modifies the refractive index of the fiber itself. Lastly, these changes can diagnose extreme environments in a flexible, time-resolved manner.