Modification of the structure of Bessel beams under oblique incidence

The stability of a Bessel beam generated via an annular slit on the focal plane of a convergent lens as a function of the angle of incidence of a plane wave into the slit was measured. Although the paraxial approximation, along with an infinite lens assumption, predicts that the only change in the B...

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Bibliographic Details
Published in:Journal of modern optics 2008-09, Vol.55 (15), p.2449-2456
Main Authors: Bendersky, A., Perez Quintian, F., Rebollo, M. A.
Format: Article
Language:English
Subjects:
Aberrations
Beam characteristics: profile, intensity, and power
spatial pattern formation
Bessel beam
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geometrical optics
Laser optical systems: design and operation
non-diffracting
non-diffractive
oblique incidence
Optics
Physics
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Summary:The stability of a Bessel beam generated via an annular slit on the focal plane of a convergent lens as a function of the angle of incidence of a plane wave into the slit was measured. Although the paraxial approximation, along with an infinite lens assumption, predicts that the only change in the Bessel beam should be a displacement, experimental results showed that other slight changes were present. It was shown numerically that the way to take into account those changes is to abandon the quadratic phase approximation for the lens. Good agreement was then found between the experimental data and the numerical simulation.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340802130662