【摘要】 左手超材料的反常古斯-汉欣位移研究在理论提出后一直没有相关的实验报道。采用干涉法,通过实验测量了银树枝左手超材料在部分反射下的反常古斯-汉欣位移。利用沃拉斯顿棱镜将入射光分为s偏振光和p偏振光,在经过银树枝左手超材料表面反射后,两束偏振光相互干涉得到了干涉图样;通过对干涉图样进行分析计算,得到了样品的古斯-汉欣位移。实验结果证实,当入射光与银树枝左手超材料的谐振频率一致时,古斯-汉欣位移值为负。更多还原

【Abstract】 To date the experimental reports on Goos-Hnchen(GH) shift of left-handed metamaterials(LHMs)have not been reported since it is theoretically demonstrated. The GH shift of LHMs based on the silver dendritic structure via interferometry is experimentally mecisuked. Wollaston prism is utilized to divide the incident light into s polarized and p polarized light. Then the two polarized light beams are made to interfere with each other to obtain the interference pattern after being reflected from the surface of the sample. And the value of GH shift is obtained by analyzing and calculating the interference pattern. Experimental results confirm that GH shift is negative as the frequency of incident light is consistent with the resonant frequency of silver dendritic LHMs.更多还原