VU Physics and Astronomy Colloquium

Friday, February 1, at 3:30 PM in NSC 221. Join us for refreshments in the Planetarium at 3:05 PM.

"Diode Lasers and Electromagnetically Induced Transparency"

Dr. Mike Kash, Department of Physics, Lake Forest College

Atoms can absorb light when then energy of the light matches the energy difference between an excited state and the ground state of the atoms.  Electromagnetically Induced Transparency (EIT) is a phenomenon in which that absorption is partially canceled by adding a second source of light.  This arrangement can sensitively detect magnetic fields and drastically slow light pulses.  The talk is an introduction to using a diode laser as a tunable light source to explore EIT in a gas of atoms.