First magneto-optical trap

We created a cesium magneto-optical trap. The white dot in the center of the glass cell is a cloud of 105 cesium atoms at a temperature of 200µK. The cesium atoms are trapped by 6 laser beams and a magnetic field gradient inside an ultrahigh vacuum chamber glass cell (10-10 Torr). The magnetic field gradient is made by the orange coils in the right picture.