金属反射中Goos-Hänchen位移的观测
Observation of Goos-Hänchen shifts in metallic reflection
摘要：
本文首次观测到入射到金属表面的光束的古斯-H $\rm \ddot{\textbf{a}}$ nchen位移。这种现象特别令人感兴趣，因为金属中$p$偏振光的古斯-H $\rm \ddot{\textbf{a}}$ nchen位移是负的，并且比$s$偏振光的正位移大得多。实验结果的测量位移的入射角的函数是在良好的协议与理论预测。在一个能量通量的解释，我们的测量表明存在一个向后的能量流在裸露的金属表面时，这是由一个$p$偏振光束激发。
英文摘要：
We report the first observation of the Goos-H$\rm \ddot{\textbf{a}}$nchen shift of a light beam incident on a metal surface. This phenomenon is particularly interesting because the Goos-H$\rm \ddot{\textbf{a}}$nchen shift for $p$ polarized light in metals is negative and much bigger than the positive shift for $s$ polarized light. The experimental result for the measured shifts as a function of the angle of incidence is in excellent agreement with theoretical predictions. In an energy-flux interpretation, our measurement shows the existence of a backward energy flow at the bare metal surface when this is excited by a $p$ polarized beam of light.
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