Evaporative Cooling | Lectures on Cold Atoms

The lecture is part of our course "Particle Traps and Laser Cooling" from the master's program in physics (specialization in Quantum Physics) at the University of Innsbruck. 00:00 Intro 00:34 Basic idea 01:57 Model of repeated evaporation steps 06:31 Evaporation efficiency 09:40 Forced evaporation 11:49 Scaling law 13:58 How many collisions are needed? 17:09 Role of inelastic collisions 18:40 Elastic scattering rate and evaporation time scale 21:33 Implementation in real experiments 21:47 Magnetic traps and RF-induced evaporation 23:09 Optical traps and laser power reduction 24:17 Role of gravity 25:49 Dimple trick 27:34 Have fun in the lab!