Talbot effect beyond the paraxial limit at optical frequencies.
Talbot effect beyond the paraxial limit at optical frequencies.
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DOI：
10.1364/oe.20.014284
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发表时间：
2012-06-18
期刊：
影响因子：
3.8
通讯作者：
Odom TW
中科院分区：
文献类型：
--
作者：
Hua Y;Suh JY;Zhou W;Huntington MD;Odom TW
本文报道了光学频率下超出近轴极限的Talbot效应的实验和理论研究。利用周期与相干照明波长相当的Au孔阵列薄膜研究了λ的非傍轴Talbot效应。观察到了与近轴(经典)Talbot效应的显著差异。根据比率的不同，垂直于孔阵方向的干涉图案不一定是周期性的，并且自映像距离偏离了近轴Talbot距离。当光从表面传播时，孔阵列膜内或膜上的缺陷在自成像中被愈合。
This paper reports the experimental and theoretical investigation of the Talbot effect beyond the paraxial limit at optical frequencies. Au hole array films with periodicitycomparable to the wavelength of coherent illumination λ were used to study the non-paraxial Talbot effect. Significant differences from the paraxial (classical) Talbot effect were observed. Depending on the ratio of , the interference pattern in the direction perpendicular to the hole array was not necessarily periodic, and the self-image distances deviated from the paraxial Talbot distances. Defects within the hole array film or above the film were healed in the self-images as the light propagated from the surface.