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Updated: May 29, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
Direct experimental observation of giant Goos-Hänchen shifts from bandgap-enhanced total internal reflection
Yuhang Wan1, Zheng Zheng, Weijing Kong
1School of Electronic and Information Engineering, Beihang University, Beijing, China.
Abstract:
Giant Goos-Hänchen (GH) shifts are experimentally demonstrated from a prism-coupled multilayer structure incorporating a one-dimensional photonic crystal (PC) through a bandgap-enhanced total internal reflection scheme. By combining the large phase changes near the bandgap of the PC and the low reflection loss of the total internal reflection, 2 orders of magnitude enhancement of the GH shift is realized with rather low extra optical loss, which might help to open the door toward many interesting applications for GH effects.

