Vortices in generalized Stokes parameters

Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda

doi:10.1117/12.859050

2 August 2010 Vortices in generalized Stokes parameters

Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda

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Proceedings Volume 7782, The Nature of Light: Light in Nature III; 778209 (2010) https://doi.org/10.1117/12.859050
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

Presence of vortices/phase singularities has been demonstrated in instantaneous generalized Stokes parameters (IGSP) of the field generated by illuminating a random phase screen with a polarization structured beam. Polarization structuring is achieved by focusing the vector beam with tilt in one of the orthogonal polarization components with respect to other. Spatially structured polarized beam is scattered by non-birefringent random phase screen placed at the focal plane of focusing lens. Field distribution of orthogonal polarization components are evaluated at the focal plane of second lens, and subsequently IGSPs are evaluated. Evaluations of the IGSPs are performed by varying one observation point r₂ with respect to a fixed reference point r₁. Distribution of phase singularities is displayed in the phase map of IGSP. These singularities disappear in the spatially averaged generalized stokes parameters.

Citation Download Citation

Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, Mitsuo Takeda, "Vortices in generalized Stokes parameters", Proc. SPIE 7782, The Nature of Light: Light in Nature III, 778209 (2 August 2010); doi: 10.1117/12.859050; https://doi.org/10.1117/12.859050

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