Open AccessPropagation-dependent beam profile distortion associated with the Goos-Hanchen shift
Author(s) -
Yuhang Wan,
Zheng Zhang,
Jinsong Zhu
Publication year - 2009
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.17.021313
Subject(s) - optics , distortion (music) , beam (structure) , physics , light beam , phase (matter) , reflection (computer programming) , near and far field , computer science , optoelectronics , amplifier , cmos , quantum mechanics , programming language
The propagation-dependent profile distortion of the reflected beam is studied via deriving the theoretical model of the optical field distribution in both the near and far field. It is shown that strong and fast-varying beam distortions can occur along the propagation path, compared to the profile on the reflecting surface. Numerical simulations for the case of a typical SPR configuration with a sharp angular response curve reveal that, when the phase distribution in the angular range covered by the input beam becomes nonlinear, previous theories based on the linear phase approximation fail to predict the Goos-Hanchen shift and its propagation-dependent variations precisely. Our study could shed light on more accurate modeling of the Goos-Hanchen effect's impact on the relevant photonic devices and measurement applications.