2015 BFY II Abstract Detail Page
Previous Page |
New Search |
||W40 - Optical Pumping
||Optical Pumping is a classic advanced lab experiment that cleverly illustrates quantum mechanical angular momentum and selection rules. It uses circularly polarized light to create a ground state population distribution that is not in thermal equilibrium. Radio frequency (RF) stimulation can then drive the Zeeman sub levels back to equilibrium, and this is detected by a change in the optical transmission. This provides an amazing leverage in which one RF "photon" (f = 10 kHz to 5 MHz) can control the transmission of one light photon (f = 3.8 x 10 14 Hz)
• Identify the components and align the full optical path from source to detector.
• Use the Helmholtz coils to create a zero field situation, and observe the exquisite magnetic field sensitivity.
• Observe the Zeeman resonances and follow them up in field.
• Come back Friday to look at Rabi oscillations and multiple photon transitions.
Jonathan Reichert, George Herold, David Van Baak, TeachSpin
|Workshop Doc 1:
Download the Workshop Doc 1
|Workshop Doc 2:
Download the Workshop Doc 2