The effect of the incident relative phase on the four-wave mixing field and the electromagnetically induced transparency
Yueping Niu, Shangqing Gong
In a Λ-type system employing a two-photon pump field, a four-wave mixing field can be generated simultaneously and, hence, a closed-loop system forms. We study theoretically the effect of the relative phase between the two incident fields on the generated four-wave mixing field and the electromagnetically induced transparency. It is found that the phase of the generated four-wave mixing field is the sum of the incident relative phase and a fixed phase that is irrelative to the incident relative phase. Hence, the total phase of the closed-loop system is independent of the incident relative phase. As a result, the incident relative phase has no effect on the electromagnetically induced transparency, which is different from the case of a Λ-type loop system closed by a third incident field.
arXiv:physics/0406035•Optics and Spectroscopy•Oct 1, 2005•1 citation