Laser Cooling 3

The cooling inside the chamber takes place in several steps. First, the slowed atoms are captured in what is called a magneto-optical trap. They use six laser beams, all intersecting in the center of the chamber. No matter which way the atoms move, they will find a laser to guide them back into the trap. In the trap, the atoms lose more energy and reach lower temperatures. But, the ultimate temperature they can reach in the laser trap is limited and they will still need to be cooled further.