利用光丝诱导荧光光谱测量单质碘升华过程

发布时间：2018-06-04 02:38

  本文选题：光谱学 + 飞秒激光　； 参考：《中国激光》2017年04期

【摘要】：利用飞秒激光大气成丝高强激光诱导荧光非线性光谱对碘单质升华过程进行了研究。研究结果发现飞秒光丝可诱导升华到空气中的碘分子产生清晰特征荧光谱。通过监测碘分子在341.6nm(D→X~1Σ_g~+跃迁)处的荧光谱线,利用时间分辨测量方法观察到碘分子荧光强度随着加热温度以及测量位置与固态碘样品距离的变化而明显变化,展示了光丝诱导荧光光谱技术应用于物态变化规律探索的可行性。
[Abstract]:The sublimation process of iodine single substance was studied by femtosecond laser and high intensity laser induced fluorescence nonlinear spectroscopy. It is found that femtosecond optical filament can induce iodine molecules sublimated into air to produce clear characteristic fluorescence spectra. By monitoring the fluorescence lines of iodine molecules at the 341.6nm(D X ~ 1 危 g ~ transition, we observed that the fluorescence intensity of iodine molecules varies significantly with the heating temperature and the distance between the measured position and the solid iodine sample by time-resolved measurement. The feasibility of the application of filament-induced fluorescence spectroscopy in the exploration of the law of physical state change was demonstrated.
【作者单位】： 吉林大学电子科学与工程学院集成光电子国家重点实验室;
【基金】：国家自然科学基金(61235003,61427816)
【分类号】：TQ124.61;O657.3
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本文编号：1975471