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Dynamic control of light propagation and optical switching through an RF-driven cascade-type atomic medium |
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| Authors: | Rong Yu Pei Huang Xiaoxue Yang |
| Affiliation: | a School of Science, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China b Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China c College of Mathematics and Physics, China University of Geosciences, Wuhan 430074, People's Republic of China |
| Abstract: | We study nonlinear optical behaviors in pulse propagation through a medium consisting of four-level cascade-type cold atoms, where a radio-frequency (RF) field couples upper two-folded levels and double-dark resonances (DDRs) can arise. By numerically solving the coupled Bloch-Maxwell equations for atom and field simultaneously in space and time, we demonstrate dynamic control of light propagation and optical switching in such a four-level atomic medium. The proposed scheme may have potential applications in the design of optical switching and optical storage devices. |
| Keywords: | 42.50.Gy 42.65.Sf 42.65.An 42.50.Hz |
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