Open AccessSource coherence-based far-field intensity filtering
Author(s) -
Zhangrong Mei,
Olga Korotkova,
Yuan Mao
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.024748
Subject(s) - coherence (philosophical gambling strategy) , degree of coherence , sinc function , optics , gaussian , physics , coherence theory , near and far field , invariant (physics) , intensity (physics) , beam (structure) , coherence length , mathematics , mathematical analysis , quantum mechanics , superconductivity
An inherent relationship between an invariant far-field beam intensity pattern and the convolution of any two legitimate degrees of coherence in the source plane is established. Two classes of random sources are introduced by modeling the source degree of coherence with the help of the convolution operation of the Gaussian Schell-model correlation function and the multi-sinc Schell-model correlation function in the polar and Cartesian symmetries. The established relationships are used to explore the far-field intensity features produced by the new sources. It is shown that the far-field intensity patterns of the novel sources have multi-sinc Schell-model transverse distributions with a Gaussian envelope, looking like the multi-sinc Schell-model beams filtered by a soft-edge Gaussian aperture. The results demonstrate the potential of coherence modulation of the source fields for far-field beam shaping applications.