Open AccessDegeneracy in the diffraction of orbital angular momentum carrying beams
Author(s) -
Emily Walla,
Chitra Shaji,
Reeta Vyas,
Surendra Singh
Publication year - 2018
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.43.005833
Subject(s) - optics , angular momentum , diffraction , physics , light beam , degeneracy (biology) , optical vortex , beam (structure) , classical mechanics , bioinformatics , biology
Symmetry constraints on the far-field diffraction of Laguerre-Gauss vortex beams by planar aperture arrays with N-fold rotational symmetry are considered. The experiments reveal a simple structure for the diffraction pattern and high degree of degeneracy in its dependence on the orbital angular momentum index of the incident beam in agreement with analytical and numerical results.