2026-06-27T23:20:53Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/512802024-08-23T14:53:17Zcom_20.500.14352_14col_20.500.14352_15

Evolution of the vortex and the asymmetrical parts of orbital angular momentum in separable first-order optical systems Alieva Krasheninnikova, Tatiana Bastiaans, Martin J. We analyze the evolution of the vortex and the asymmetrical parts of orbital angular momentum during its propagation through separable first-order optical systems. We find that the evolution of the vortex part depends on only parameters a(x), a(y), b(x), and b(y) of the ray transformation matrix and that isotropic systems with the same ratio b/a produce the same change of the vortex part of the orbital angular momentum. Finally, it is shown that, when light propagates through an optical fiber with a quadratic refractive-index profile, the vortex part of the orbital angular momentum cannot change its sign more than four times per period. 2023-06-20T10:49:08Z 2023-06-20T10:49:08Z 2023-06-20T10:49:08Z 2004-07-15 journal article https://hdl.handle.net/20.500.14352/51280 0146-9592 10.1364/OL.29.001587 eng TIC 2002-01846 open access Optical Society of America