2004
DOI: 10.1364/ol.29.001587
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Evolution of the vortex and the asymmetrical parts of orbital angular momentum in separable first-order optical systems

Abstract: 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 b͞a 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 r… Show more

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Cited by 17 publications
(8 citation statements)
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“…In the present paper, we make an attempt to address this problem and show that it offers a suitable and insightful model for inspecting the internal structure of the OVs and understanding their physical nature. In this way, the beam characterization by the irradiance moments and related quantities [19][20][21][22][23][24][25][26] appears to be helpful. Although the direct application of the momentmatrix formalism meets some difficulties in the case of hard-edge diffracted beams, 27,28 we show that reasonable approximations can be introduced that enable to preserve the physical meaning and usability of important moment-based concepts, e.g.…”
Section: Introductionmentioning
confidence: 99%
“…In the present paper, we make an attempt to address this problem and show that it offers a suitable and insightful model for inspecting the internal structure of the OVs and understanding their physical nature. In this way, the beam characterization by the irradiance moments and related quantities [19][20][21][22][23][24][25][26] appears to be helpful. Although the direct application of the momentmatrix formalism meets some difficulties in the case of hard-edge diffracted beams, 27,28 we show that reasonable approximations can be introduced that enable to preserve the physical meaning and usability of important moment-based concepts, e.g.…”
Section: Introductionmentioning
confidence: 99%
“…We recall that the orbital angular momentum ⌳ is invariant in an isotropic first-order optical system [28][29][30], for which the ray transformation matrix can be expressed as…”
Section: B Propagation Of the Orbital Angular Momentum In An Isotropmentioning
confidence: 99%
“…The angular momentum of light [18][19][20][21][22][23][24][25][26] is another global characteristic that deserves study. Recall that, for paraxial beams, the existence of angular momentum is a consequence of the contribution of a spin component associated with its polarization, and of an orbital component, related with twisting behavior, astigmatism and vortices.…”
Section: Formalism and Key Definitionsmentioning
confidence: 99%