The reconstruction of optical angular momentum after distortion in amplitude, phase and polarization

V. Garcés-Chávez; D. McGloin; M. D. Summers; A. Fernandez-Nieves; G. C. Spalding; G. Cristobal; K. Dholakia

doi:10.1088/1464-4258/6/5/016

The reconstruction of optical angular momentum after distortion in amplitude, phase and polarization

V. Garcés-Chávez, D. McGloin, M. D. Summers, A. Fernandez-Nieves, G. C. Spalding, G. Cristobal, K. Dholakia

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Propagation through a distorting obstacle may significantly influence the amplitude, phase and polarization state of a light beam. This potentially has consequences for the behaviour of the optical angular momentum of light. We experimentally study how both the spin and orbital angular momentum (OAM) of light behaves upon passage through microscopic optically trapped particles. Particles trapped with Gaussian and, separately, Bessel light beams in two spatially distinct sample chambers are studied with trapped objects in the first chamber acting as distorting obstacles. The Bessel beam can reconstruct its spatial form and this shows reconstruction of both spin and OAM over extended distances.

Original language	English
Pages (from-to)	S235-S238
Journal	Journal of Optics A: Pure and Applied Optics
Volume	6
Issue number	5
DOIs	https://doi.org/10.1088/1464-4258/6/5/016
Publication status	Published - 2004 May

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1088/1464-4258/6/5/016

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abstract = "Propagation through a distorting obstacle may significantly influence the amplitude, phase and polarization state of a light beam. This potentially has consequences for the behaviour of the optical angular momentum of light. We experimentally study how both the spin and orbital angular momentum (OAM) of light behaves upon passage through microscopic optically trapped particles. Particles trapped with Gaussian and, separately, Bessel light beams in two spatially distinct sample chambers are studied with trapped objects in the first chamber acting as distorting obstacles. The Bessel beam can reconstruct its spatial form and this shows reconstruction of both spin and OAM over extended distances.",

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AU - Garcés-Chávez, V.

AU - McGloin, D.

AU - Summers, M. D.

AU - Fernandez-Nieves, A.

AU - Spalding, G. C.

AU - Cristobal, G.

AU - Dholakia, K.

PY - 2004/5

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N2 - Propagation through a distorting obstacle may significantly influence the amplitude, phase and polarization state of a light beam. This potentially has consequences for the behaviour of the optical angular momentum of light. We experimentally study how both the spin and orbital angular momentum (OAM) of light behaves upon passage through microscopic optically trapped particles. Particles trapped with Gaussian and, separately, Bessel light beams in two spatially distinct sample chambers are studied with trapped objects in the first chamber acting as distorting obstacles. The Bessel beam can reconstruct its spatial form and this shows reconstruction of both spin and OAM over extended distances.

AB - Propagation through a distorting obstacle may significantly influence the amplitude, phase and polarization state of a light beam. This potentially has consequences for the behaviour of the optical angular momentum of light. We experimentally study how both the spin and orbital angular momentum (OAM) of light behaves upon passage through microscopic optically trapped particles. Particles trapped with Gaussian and, separately, Bessel light beams in two spatially distinct sample chambers are studied with trapped objects in the first chamber acting as distorting obstacles. The Bessel beam can reconstruct its spatial form and this shows reconstruction of both spin and OAM over extended distances.

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The reconstruction of optical angular momentum after distortion in amplitude, phase and polarization

Abstract

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