Resonant Degenerate Four-Wave Mixing in SO2 |
| W. Weia, b, Z.Z. Lua, c, Q. Dongc, Y.L. Sunc, L. Mac, J.L. Liaoc, J.F. Liuc, X.P. Xiea, W. Zhaoa
aState Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an 710119, China bUniversity of Chinese Academy of Sciences (UCAS), Beijing 100049, China cSchool of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China |
| Received: January 21, 2019; in final form March 6, 2020 |
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| 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 B1B1â¤ftarrowX1A11 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. |
DOI:10.12693/APhysPolA.137.1022 PACS numbers: 32.70.Jz, 34.50.-s |