物理化学学报 >> 1999, Vol. 15 >> Issue (05): 436-442.doi: 10.3866/PKU.WHXB19990510

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C2H2分子(X1∑g+,ν2”=1,J”)态mj定向布居及光学AC Stark效应

高文斌, Rudert A D, Martin J, Zacharis H, Halpern J.B.   

  1. 杭州电子工业学院，杭州 310037|PhysikalischesInstitute，Universitaet Muenster,Wilhelm-klemm Str.10,48149 Muenster,BRD|Chemistry Department,Howard University,Washington DC 20059 USA
  • 收稿日期:1998-08-10 修回日期:1998-12-22 发布日期:1999-05-15
  • 通讯作者:

A Study of the Optical AC Stark Effect and Orientation of C2H2 Rovibrational States (X1∑g+,ν2”=1,J”)

Gao Wen-Bin, Rudert  A D, Martin  J, Zacharis  H, Halpern J.B.   

  1. Hangzhou Insitute of Electronics Engineering,Hangzhou 310037|PhysikalischesInstitute，Universitaet Muenster,Wilhelm-klemm Str.10,48149 Muenster,BRD|Chemistry Department,Howard University,Washington DC 20059 USA
  • Received:1998-08-10 Revised:1998-12-22 Published:1999-05-15
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摘要：

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．

关键词: 受激Raman泵浦, 光学AC Stark效应, 角动量定向分布A

Abstract:

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.

Key words: Stimulated Raman pumping, Optical AC Stark effect, Orientation