Abstract Under a nonresonant condition, we theoretically investigate hybrid absorptive-dispersive optical bistability and multistability behaviours in a three-level Δ-type system by using a microwave field to drive a hyperfine transition between two upper excited states inside a unidirectional ring cavity. We find that the optical bistability and multistability behaviours can be controlled by adjusting the intensity of the microwave field or the intensity of the coherent coupling field. Furthermore, our studies show an interesting phenomenon of the transition from the optical bistability to the optical multistability only by changing the negative detuning of the coupling field into the positive detuning of the coupling field.
Received: 14 April 2008
Revised: 06 July 2008
Accepted manuscript online:
PACS:
42.65.Pc
(Optical bistability, multistability, and switching, including local field effects)
Fund: Project supported
by Natural Science Foundation of Jiangxi, China (Grant Nos
2007GZW0819 and 2008GQW0017) the Scientific Research Foundation of
Jiangxi Provincial Department of Education, China (Grant Nos
[2007]191 and GJJ09504), the Science Foundation of
Cite this article:
Chen Ai-Xi(陈爱喜), Wang Zhi-Ping(王志平), Chen De-Hai(陈德海), and Xu Yan-Qiu(徐彦秋) Optical bistability and multistability in a three-level Δ-type atomic system under the nonresonant condition 2009 Chin. Phys. B 18 1072
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