14 March 2016 Experimental investigation on the lensing and Talbot effects of finite-sized 2D periodic metallic nanoaperture arrays
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Abstract
This paper presents the preliminary experimental studies of the influences of structural parameters, including the fill factor, device size, lattice, and nanoaperture shape, on the far-field optical transmission properties through the finite-sized two-dimensional periodic arrays of metallic nanoapertures. Both the lensing effect and the Talbot effect are observed, characterized and analyzed. Light intensity patterns of Talbot revivals at various Talbot distances containing abundant subwavelength hotspots are obtained, and the average size of the hotspots are derived and compared. Some concluding remarks are given to provide an important technological reference for the design and application of such devices according to the current experimental results.
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Yiting Yu, Hans Zappe, Xiaoyun Zhang, "Experimental investigation on the lensing and Talbot effects of finite-sized 2D periodic metallic nanoaperture arrays", Proc. SPIE 9756, Photonic and Phononic Properties of Engineered Nanostructures VI, 975618 (14 March 2016); doi: 10.1117/12.2209354; https://doi.org/10.1117/12.2209354
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