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报道了观察到的碘分子（１２７Ｉ２）在６３３ｎｍ波段的５组超精细强谱线，并对每组谱线的频率间距及相应振转能级的跃迁强度作出了计算，结果和实验吻合得很好．利用计算结果，对这５组谱线对应的振转能带作出了甄别．由于这些新谱线比用于氦氖激光器稳频的Ｒ（１２７）１１５跃迁强几百倍，因此利用这些新谱线作为半导体激光稳频的参考谱线，得到了功率为３ｍＷ的激光输出，这种半导体激光可成为新型光频标．
The observed super-fine strong lines of iodine (127I2) in the 633nm band are reported, and the frequency spacing of each line and the transition intensity of the corresponding vibrational levels are calculated. The results are in good agreement with experiments it is good. Using the calculation results, the corresponding vibrational energy bands of the five groups of lines are discriminated. Since these new spectra are several hundred times stronger than the R (127) 11-5 transition used for the frequency stabilization of a HeNe laser, these new lines are used as reference lines for frequency stabilization of semiconductor lasers to obtain a laser power of 3 mW Output, this semiconductor laser can become the new optical frequency standard.