Dynamic control of light propagation and optical switching through an RF-driven cascade-type atomic medium

作者：Yu, Rong; Li, Jiahua^*; Huang, Pei; Zheng, Anshou; Yang, Xiaoxue

来源：Physics Letters, Section A: General, Atomic and Solid State Physics , 2009, 373(33): 2992-3000.

DOI：10.1016/j.physleta.2009.06.013

• Optical switching
• Cascade-type atom
• Radio-frequency (RF) field
• Double-dark resonances (DDRs)

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.

• 出版日期2009-8-10
• 单位华中科技大学; 中国地质大学（北京）; 武汉工程大学