Acta Optica Sinica, Volume. 24, Issue 7, 989(2004)
A Proposal for the Measurement of Quadrupole Field of Magneto-Optical Trap with Nonlinear Magneto-Optical Rotation
In order to make sure the magnetic field distribution around the magneto-optical trap cold atoms, the weak variation and distribution around the zero-point magnet field can be analyzed. A theoretical analysis is based on the interaction between cold atoms and right-hand circular probe beams. For different transition probability of left and right-hand circularly polarized probe beam before and after zero-point magnetic field, nonlinear magnetic optical rotation (NMOR) induced by cold atoms is computed around the zero-point of 87Rb magneto-optical trap. Using such NMOR effects, rotation angle variation with the magnetic field can be got, even up to an order of magnitude 10-13 T. In the mean time, with such effect a two-peak-dispersionlike structure is developed, which is different from the results mentioned in other papers.
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He Lingxiang, Wang Yuzhu. A Proposal for the Measurement of Quadrupole Field of Magneto-Optical Trap with Nonlinear Magneto-Optical Rotation[J]. Acta Optica Sinica, 2004, 24(7): 989