We present the results of investigation of total internal reflection of a femtosecond light filament in a LiF crystal in the regime of anomalous group velocity dispersion. We measure the Goos–Hnchen shift of the filament in the vicinity of the critical angle for a single femtosecond pulse using the laser coloration method. The obtained experimental values are compared to several existing theoretical models.

中文翻译：

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激光着色法可视化中红外飞秒灯丝的Goos-Hnchen位移

我们提出了在异常群速度色散范围内的LiF晶体中飞秒灯丝的全内反射研究的结果。我们使用激光着色方法测量了单个飞秒脉冲在临界角附近的灯丝的Goos-Hnchen位移。将获得的实验值与几种现有的理论模型进行比较。