Laser frequency offset-locking using electromagnetically induced transparency spectroscopy of <sup>85</sup>Rb in magnetic field

Laser frequency offset-locking using electromagnetically induced transparency spectroscopy of ⁸⁵Rb in magnetic field

Wang Han-Mu^{1, 2}, Cheng Hong^{1, 2}, Zhang Shan-Shan^{1, 2}, Xin Pei-Pei^{1, 2}, Xu Zi-Shan^{1, 2}, Liu Hong-Ping^{1, 2, †}

(color online) The SAS of the coupling laser and the corresponding SAS of the probe laser with different magnetic fields applied on cell 1: (a) B = 0 G, (b) B = 35 G, (c) B = 80 G. The frequency difference corresponds to the additional energy shift based on the hyperfine-splitting of the ground state.