𝔖 Bobbio Scriptorium
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Flattened light beams

✍ Scribed by C.J.R Sheppard; S Saghafi

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
336 KB
Volume
132
Category
Article
ISSN
0030-4018

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Focusing properties of attened Gaussian beams (FGBs) passing through an annular lens is studied based on the Collins formula. It is found that the on-axis irradiance distributions of focused FGBs are unsymmetrical with respect to the geometrical focal plane even for large values of Fresnel number Fw