Controllable four-wave mixing in an atom–optical cavity coupling system with a second-order nonlinear crystal

• DOI: 10.1364/josab.444507
• Publication Date: 2021-11-16T20:00:30Z
• Authors: Yu-Fan Yang; Bin Chen; Li-Li Xing; Jian-Bin Chen; Hai-Bin Xue; Kang-Xian Guo
• Keywords: Four-wave mixing; SIGNAL (programming language)

The four-wave mixing (FWM) effect has been systematically studied in an atom–optical cavity coupling system with a second-order nonlinear crystal (SOC), which is formed by optical two-level atom and SOC. In this research, it found that the FWM largely depends on SOC, because SOC can promote two-photon absorption process. Therefore, tunable signal be obtained controlling Moreover, results also show decay rate plays important role signal. By optimizing strong generated. addition, adjusting cavity–pump detuning, conversion between single-peak two-peak easily realized.