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Open AccessArticle

Effect of Excitation Beam Divergence on the Goos–Hänchen Shift Enhanced by Bloch Surface Waves

1
School of Information and Communication Engineering, North University of China, 3 Xueyuan Rd., Taiyuan 030051, China
2
School of Electronic and Information Engineering, Beihang University, 37 Xueyuan Rd., Beijing 100191, China
3
School of electronic engineering, Tianjin University of Technology and Education, 1310 Dagu South Rd., Tianjin 300222, China
4
Collaborative Innovation Center of Geospatial Technology, 129 Luoyu Road, Wuhan 430079, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(1), 40; https://doi.org/10.3390/app9010040
Received: 24 October 2018 / Revised: 11 December 2018 / Accepted: 19 December 2018 / Published: 22 December 2018
(This article belongs to the Special Issue Nanomaterials for Solar Water Splitting)
The Goos–Hänchen (GH) shift is simulated and experimentally studied when the Bloch surface wave is excited in the forbidden band of a one-dimensional photonic band-gap structure for an excitation beam with different divergence. By changing the beam waist radius, a correspondingly changed Goos–Hänchen shift curve can be observed, where with a larger waist radius and the corresponding less divergence of the excitation beam, a greater GH shift that is closer to the Artmann estimation is obtained. The experimental demonstration of this phenomenon agrees well with the theoretical simulation. View Full-Text
Keywords: Goos–Hänchen shift; Bloch surface wave; one-dimensional photonic band-gap Goos–Hänchen shift; Bloch surface wave; one-dimensional photonic band-gap
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MDPI and ACS Style

Li, S.; Wan, Y.; Liu, J.; Kong, W.; Zheng, Z. Effect of Excitation Beam Divergence on the Goos–Hänchen Shift Enhanced by Bloch Surface Waves. Appl. Sci. 2019, 9, 40.

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