Open AccessThe far-field divergence angle and the far-field radiant intensity distribution of Gaussian Schell-model array beams
Author(s) -
Xiaoling Ji,
Xiaoqing Li
Publication year - 2009
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.58.4624
Subject(s) - near and far field , beam divergence , divergence (linguistics) , gaussian , physics , optics , intensity (physics) , beam (structure) , gsm , gaussian beam , beam diameter , field (mathematics) , laser , mathematics , telecommunications , laser beams , computer science , linguistics , philosophy , quantum mechanics , pure mathematics
The analytical expressions for the mean-squared beam width, the far-field divergence angle and the far-field radiant intensity of Gaussian Schell-model GSM array beams are derived, and the condition under which GSM array beams have the same far-field divergence angle as a single Gaussian beam. It is shown that GSM array beams and a Gaussian beam which have the same far-field divergence angle may have different far-field radiant intensity distribution, which is quite different from the behavior of GSM beams.