Electromagnetically induced transparency at optical nanofiber–cesium vapor interface Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304203), the National Natural Science Foundation of China (Grant Nos. 61675120, 11434007, and 61875110), Project of the National Natural Science Foundation of China for Excellent Research Team (Grant No. 61121064), the Shanxi “1331 Project” Key Subjects Construction, PCSIRT, China (Grant No. IRT 17R70), and the 111 Project, China (Grant No. D18001). |
(a) The normalized transmission spectrum of the probe laser in the absence of the control laser. The black line is the free-space SAS spectrum. (b) Experimental observation (red line) and theoretical simulation (black line) of EIT spectrum with Doppler-broadened background. The control laser frequency is fixed on resonance with a power of 34.3 μW. |