Open AccessNearly three orders of magnitude enhancement of Goos-Hanchen shift by exciting Bloch surface wave
Author(s) -
Yuhang Wan,
Zheng Zhang,
Weijing Kong,
Xin Zhao,
Ya Liu,
Yusheng Bian,
Jiansheng Liu
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.008998
Subject(s) - optics , photonic crystal , refractive index , wavelength , physics , excited state , total internal reflection , surface wave , cladding (metalworking) , bloch wave , millimeter , materials science , condensed matter physics , atomic physics , metallurgy
Goos-Hanchen effect is experimentally studied when the Bloch surface wave is excited in the forbidden band of a one-dimensional photonic band-gap structure. By tuning the refractive index of the cladding covering the truncated photonic crystal structure, either a guided or a surface mode can be excited. In the latter case, strong enhancement of the Goos-Hanchen shift induced by the Bloch-surface-wave results in sub-millimeter shifts of the reflected beam position. Such giant Goos-Hanchen shift, ~750 times of the wavelength, could enable many intriguing applications that had been less than feasible to implement before.