In:
Journal of Physics: Conference Series, IOP Publishing, Vol. 1368, No. 2 ( 2019-11-01), p. 022019-
Abstract:
Here we propose and study both theoretically and experimentally a simple and high-efficient technique for measuring the orbital angular momentum (OAM) of paraxial laser beams. The technique uses two intensity distributions measured in the foci of two perpendicular cylindrical lenses. For these distributions, first-order intensity moments are calculated, which allow the OAM to be easily obtained. The experimental error increases from ~1% for small fractional OAM (up to 4) to ~8% for large fractional OAM (up to 30). We also show numerically that the proposed technique allows to determine the OAM if the beam is distorted by a phase diffuser in the initial plane.
Type of Medium:
Online Resource
ISSN:
1742-6588
,
1742-6596
DOI:
10.1088/1742-6596/1368/2/022019
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2019
detail.hit.zdb_id:
2166409-2
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