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Two-element diffractive systems for generation of Bessel fields

We demonstrate experimentally a combination of two apodizing diffractive elements, which generate nearly propagation-invariant Bessel fields efficiently with almost uniform axial intensity distributions over the specified region recently introduced by two of the present authors. Strongly reduced int...

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Bibliographic Details
Published in:Journal of modern optics 2002-09, Vol.49 (11), p.1943-1953
Main Authors: PÄÄKKÖNEN, PERTTI, SIMONEN, JANNE, HONKANEN, MARKO, TURUNEN, JARI
Format: Article
Language:English
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Summary:We demonstrate experimentally a combination of two apodizing diffractive elements, which generate nearly propagation-invariant Bessel fields efficiently with almost uniform axial intensity distributions over the specified region recently introduced by two of the present authors. Strongly reduced intensity fluctuations near both ends of the propagation-invariant range are verified. Various design and alignment issues of the two-element systrem are addressed numerically.
ISSN:0950-0340
1362-3044
DOI:10.1080/0950034021000016874