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Physics Letters A

Amplification without population inversion in a three-level Λ-type system with an external coherent magnetic field

Hui Sun, Hong Mei Guo, Shuangli Fan, Yanfeng Bai, Dingan Han

Published Dec 24, 2004• 3 citations
Publisher
DOI
10.1016/j.physleta.2004.12.009

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Coherent population trapping effect is widely studied for simple three-level systems of different types ((Xi) , (Lambda) , V). For real atoms situation is more complicated. Atomic levels are degenerated one and in the presence of external fields coupling of magnetic sublevels appears due to as radiation, so magnetic fields, leading to the systems of levels of the higher order. Our theory and model of calculation for interaction of multilevel atom with intense radiation field at the presence of external magnetic field have been applied for considering coherent population trapping effect for such systems.