Max-Planck-Institut für Physik Komplexer Systeme, Dresden, Germany.
Opt Lett. 2011 Mar 15;36(6):1023-5. doi: 10.1364/OL.36.001023.
We study the output from the modes described by the superposition of Gaussian beams confined in the quasi-stadium microcavities. We experimentally observe the deviation from Snell's law in the output when the incident angle of the Gaussian beam at the cavity interface is near the critical angle for total internal reflection, providing direct experimental evidence on the Fresnel filtering. The theory of the Fresnel filtering for a planar interface qualitatively reproduces experimental data, and a discussion is given on small deviation between the measured data and the theory.
我们研究了由限制在准体育场微腔中的高斯光束叠加所描述的模式的输出。当高斯光束在腔界面处的入射角接近全内反射的临界角时，我们实验观察到输出中的斯涅尔定律的偏离，这为菲涅尔滤波提供了直接的实验证据。平面界面菲涅尔滤波的理论定性地再现了实验数据，并讨论了测量数据与理论之间的小偏差。
