How MOT Works!

Absorption.

k

E=ћω P=ћK J= ћ

E=0 P=0 J= 0

E=ћω P=ћK J= ћ

MF+1

2

MF0

I

MF-1

-

+

I

l

1

Detuning B-field Gradient Polarization

MOT has the combination of ground and excited states