Citation: Gao Wen-Bin, Rudert A D, Martin J, Zacharis H, Halpern J.B.. A Study of the Optical AC Stark Effect and Orientation of C2H2 Rovibrational States (X1∑g+,ν2”=1,J”)[J]. Acta Physico-Chimica Sinica, 1999, 15(05): 436-442. doi: 10.3866/PKU.WHXB19990510
C2H2分子(X1∑g+,ν2”=1,J”)态mj定向布居及光学AC Stark效应
利用相干受激Raman抽运，选择性地激发C2H2分子（X1Σg+,v2＝1，J"）单一振转态．在Raman泵浦与探测激光不同偏振条件下，获得紫外探测激光诱导的A1Au（v3＝1）-（X1Σg+v2＝1，J"）荧光增益光谱，从而研究了C2H2分子单一振转态的光学AC Stark效应和mj的定向分布A0(1），利用stark线型加宽数值模型，从理论上计算得到的Raman线型与实验结果进行比较，二者符合程度相当好．
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关键词:
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受激Raman泵浦
- / 光学AC Stark效应
- / 角动量定向分布A
English
A Study of the Optical AC Stark Effect and Orientation of C2H2 Rovibrational States (X1∑g+,ν2”=1,J”)
The selective preparation of C2H2 in discrete rovibrational states of v"2 mode in its electronic ground state (x1Σ+g, v"2 = 1, J") is achieved by stimulated Raman pumping. The optical AC Stark effect and orientation have been observed from the UV laser induced fluorescence signalA1 Au (v'3 = 1, J, ) -X1Σ+ (v", = 1, J") using different polarizations of Raman pumping and probing lasers. The calculated Raman line-shapes based on the Stark profile broadening numerical model agree well with the experimentally measured profiles.
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Key words:
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Stimulated Raman pumping
- / Optical AC Stark effect
- / Orientation
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