Open AccessPropagation dynamics of off-axis phase singularities
Author(s) -
Pusheng Liu,
Ke Cheng,
Lyu Bai-Da
Publication year - 2008
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.57.1683
Subject(s) - gravitational singularity , diffraction , physics , plane (geometry) , phase (matter) , singularity , gaussian , displacement (psychology) , annihilation , optics , geometry , mathematics , quantum mechanics , psychology , psychotherapist
An analytical expression for the half-plane diffraction of off-axis phase singularity beams based on Gaussian intensity profile is derived, which enables us to study the propagation dynamics of off-axis phase singularities in detail. It is shown that the half-plane screen diffraction, off-axis displacement and propagation distance affect the propagation behavior and spatial distribution of phase singularities. By varying the off-axis displacement and propagation distance, the creation, shift and annihilation of phase singularities in the diffraction field may appear.