Resonant Degenerate Four-Wave Mixing in SO2
Wenqi Wei, Z.Z. Lu, Q. Dong +6 more
We report an experimental investigation of degenerate four-wave mixing spectrum of SO2.A novel beam-split technique is used to compensate the beam drift caused by the laser itself and disturbance from the environment.Degenerate four-wave mixing spectra of the transition B 1 B1 ← X 1 A11 for SO2 are obtained.The degenerate four-wave mixing signal intensity as a function of the total input laser energy is measured.The effects of the laser field intensity on the degenerate four-wave mixing spectrum are analyzed.Our results show that the degenerate four-wave mixing signal intensity rises with laser intensity and tends to saturate.Then, a dip begins to appear at resonance in the profile with increase in laser field.The existence of saturation for degenerate four-wave mixing signal intensity and spectrum profile confirms the prediction of previous theoretical work.
Acta Physica Polonica A•Jun 1, 2020•0 citations