关于SF_6分子的非简并四光子混频增益谱
About nondegenerative four photon mixing gain spectroscopy of the SF_6 molecules
摘要：
用$CO_2$ TEA激光辐射对$SF_6$的$ν_3$吸收带进行了红外双共振测量。考虑到存在广泛的组成部分的线，非退化四光子混合（NFPM）和时间不变性破坏的光子-分子相互作用中，在目前和在一些早期的工作中得到的结果进行了讨论。建议将NFPM效应用于多原子分子光学跃迁形状的研究，特别是用于宽谱线分量的均匀宽度的评估。讨论了光学T不变性破坏现有效应实验研究的必要性和存在的问题。
英文摘要：
Infrared-infrared double resonance measurements of the $ν_3$ absorption band of $SF_6$ using a $CO_2$ TEA laser radiation have been carried out. The results obtained in the present and in some earlier works are discussed taking into account existence of a wide component of lines, nondegenerative four photon mixing (NFPM) and time invariance violation in the photon-molecule interactions. It is proposed to use the NFPM effect in investigations of the shape of the optical transition in polyatomic molecules and especially for evaluation of the homogeneous width of the wide component of lines. The need and problems of experimental study of existing effects of the T-invariance violation in optics are discussed.
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