Open AccessERROR ANALYSIS FOR THE FAR-FIELD OF A SMALL PLANE SOURCE
Author(s) -
Xiaodong Zeng,
Liang Chen,
Yi An
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.1665
Subject(s) - amplitude , physics , near and far field , helmholtz equation , perturbation (astronomy) , paraxial approximation , field (mathematics) , plane wave , optics , source field , computational physics , mathematics , quantum mechanics , boundary value problem , beam (structure) , pure mathematics
Based on a rigorous far-field solution of the Helmholtz equation,the dependence of the far-field of the light wave with a large divergence angle on the perturbation of the source profile is discussed,and the error formulas of the far-field amplitude and phase are also given.It is shown that the far-field errors must be described by using the “error area” of the source.In the paraxial region,the far-field amplitude and phase are not sensitive to the source perturbation,but,in off-axis region,they may be sensitive.