Role of population transfer under strong probe conditions in electromagnetically induced transparency

Abstract

We analyze theoretically the phenomenon of electromagnetically induced transparency (EIT) under conditions where the probe laser is not in the usual weak limit. We consider the effects in both three-level and four-level systems, which are either closed or open (due to losses to an external metastable level). We find that the EIT dip almost disappears in a closed three-level system but survives in an open system. In four-level systems, there is a narrow enhanced-absorption peak (EITA) at line center, which has applications as an optical clock. The peak converts to an EIT dip in a closed system, but again survives in an open system.

arXiv comment4 pages, 4 figure, accepted in Optics Communications

References in corpus (5)

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• A high-accuracy optical clock via three-level coherence in neutral bosonic ${}^{88}$Sr
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Cited by in corpus (2)

• Control and manipulation of electromagentically induced transparency in a nonlinear optomechanical system with two movable mirrors
• Role of different type of sub-systems in doubly driven Lambda-system in 87Rb