Author Affiliations
1College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China2State Key Laboratory of Quantum Optics and Quantum Optics Devices and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, Chinashow less
Fig. 1. Energy level diagram of Cs for two-color polarization spectroscopy: the circularly polarized 852.3 nm pump laser drives transitions and induces an anisotropy in the atomic medium, which is detected by a linearly polarized 794.6 nm probe laser between the excited state transition.
Fig. 2. Schematic diagram of the experimental setup for two-color polarization spectroscopy. DL: diode laser; OI: optical isolator; HWP: half-wave plate; QWP: quarter-wave plate; PBS: polarizing beam splitting cube; DF: dichroic filter; M: mirror; NDF: neutral density filter; PD: photodiode detector; Cs cell: cesium vapor cell.
Fig. 3. Typical TCPS corresponding to the excited states hyperfine transition for the co-propagating configuration.
Fig. 4. Evolution of the (a) magnitude, (b) linewidth, and (c) slope of two-color polarization spectra with increasing 852.3 nm pump power for the counterpropagating and co-propagating experimental configurations between the pump and probe laser beams.
Fig. 5. In the TCPS scanning mode, a theoretical comparison of the EIT atomic coherence effect between the counterpropagating and co-propagating experimental configurations between the pump and probe laser beams in a ladder-type atomic system.
Fig. 6. Experimental comparison of TCPS and DROP/EIT between the counterpropagating and co-propagating experimental configurations between the pump and probe laser beams.
Fig. 7. Evolution of the (a) magnitude, (b) linewidth, and (c) slope of two-color polarization spectra with increasing 794.6 nm probe power for the counterpropagating and co-propagating experimental configurations between the pump and probe laser beams.