Indirect pumping bell–bloom magnetometer |
Direct and indirect pumping light are combined in BS and modulated by EOM and then enter the cell. The linear polarized probe light is detuned to the red and the rotation angle is monitored by the balanced detector by the Lock-in. The modulation signal and its reference signal is send to the EOM and Lock-in respectively. DP, IP: the direct and indirect pumping light. FG: frequency generator. |