Experimental studies of the internal Goos-Hanchen shift for self-collimated beams in two-dimensional microwave photonic crystals
Experimental studies of the internal Goos-Hanchen shift for self-collimated beams in two-dimensional microwave photonic crystals
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DOI：
10.1063/1.2980033
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发表时间：
2008-08
期刊：
影响因子：
--
通讯作者：
A. Matthews;Y. Kivshar
中科院分区：
文献类型：
--
作者：
A. Matthews;Y. Kivshar
从实验上研究了二维光子晶体表面反射自准直光束时观察到的古斯-汉臣效应，描述了一种通过表面工程控制光束反射的方法。由氧化铝棒制成的微波光子晶体允许通过改变反射面上的棒直径来控制经历古斯-汉臣内漂移的反射光束的输出位置。实验数据与时域有限差分数值计算结果吻合较好。
We study experimentally the Goos-Hanchen effect observed at the reflection of a self-collimated beam from the surface of a two-dimensional photonic crystal and describe a method for controlling the beam reflection through surface engineering. The microwave photonic crystal, fabricated from alumina rods, allows control of the output position of a reflected beam undergoing an internal Goos-Hanchen shift by changing the rod diameter at the reflection surface. The experimental data is in good agreement with the results of the finite-difference time-domain numerical calculations.