Coherent Light Generation Using Four-Wave Mixing

Jiahua Li, Ai-Xi Chen, Zhiming Zhan +1 more

We demonstrate the efficient generation of coherent light in a four-level double-cascade atomic medium by continuous-wave low-intensity laser radiation. We derive the corresponding explicit analytical expressions for the generated four-wave mixing (FWM) field. Dependencies of the intensity of the generate FWM field on the propagation distance, on the input-wave intensity, and on the photon detuning are investigated. To conclude, we also give a brief discussion on the experimental realization of the proposed scheme.

A. A. Zobolotskii

Yoel Sebbag, Yefim Barash, Uriel Levy

We demonstrate the generation of coherent mid-infrared light at 5.23 μm in hot rubidium vapor by parametric four wave mixing. Different regimes of competition between amplified spontaneous emission and four wave mixing are observed.

Reinhard Honegger

Jiahua Li, Luo Jin-Ming, Wen‐Xing Yang +1 more

Using Schrodinger–Maxwell formalism, we propose and analyse a continuous-wave four-wave mixing (FWM) scheme for the generation of coherent light in a five-state double-Λ atomic system with or without spontaneously generated coherence (SGC) based on electromagnetically induced transparency (EIT). We derive the corresponding explicit analytical expressions for the generated FWM field under the steady-state condition. The influence of hyperfine sublevel and SGC effect on the amplitude of the generated FWM field is predicted in detail via the derived analytical expressions. We also give a brief discussion on the experimental realization of the proposed scheme.

Alexander L. Gaeta