Open AccessOptimized design of phase plates for shaping partially coherent beams based on the adaptive genetic algorithm
Author(s) -
Jianlong Li,
Lü 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.57.3006
Subject(s) - coherence (philosophical gambling strategy) , genetic algorithm , beam (structure) , optics , gaussian , phase (matter) , computer science , algorithm , gaussian beam , physics , quantum mechanics , machine learning
Based on the adaptive genetic algorithmthe optimized design of phase plates for shaping partially coherent beams is performed. Taking the Gaussian Schell-mode beam as an examplethe analytical expression for the far-field intensity is derived and the phase plate capable of transforming GSM beams to flat-topped ones is optimized. The effect of spatial coherence on the beam shaping is illustrated by a numerial example. Comparison of the results with the previous work shows the advantages of the adaptive genetic algorithm in shaping partially coherenct beams.