Optical vortex conversion in the elliptic vortex-beam propagating orthogonally to the crystal optical axis: the experiment

Bogdan Sokolenko; Maria Kudryavtseva; Alexey Zinovyev; Victor Konovalenko; Alex Rubass

doi:10.1117/12.921546

22 November 2011 Optical vortex conversion in the elliptic vortex-beam propagating orthogonally to the crystal optical axis: the experiment

Bogdan Sokolenko, Maria Kudryavtseva, Alexey Zinovyev, Victor Konovalenko, Alex Rubass

Author Affiliations +

Proceedings Volume 8338, Tenth International Conference on Correlation Optics; 83380D (2011) https://doi.org/10.1117/12.921546
Event: Correlation Optics 2011, 2011, Chernivsti, Ukraine

Abstract

We have experimentally analyzed the topological reactions occurred in the elliptic vortex-beam transmitting orthogonally to the optical axis of the SiO2 crystal. We have revealed that the oscillations of the polarization state when propagating the beam are accompanied by reconstruction of the polarization singularities at the beam cross-section that, in turn, entails the reconstruction of the wavefront in each circularly polarized beam component. Both synchronic oscillations of the spin angular momentum and the sign of the vortex topological charge are expressing in a field structure as birth and annihilation of topological dipoles. Also periodical conversion of the vortex ellipticity along the crystal length z and huge splash of spin angular momentum were analysed. The run of the dislocation reactions in the beam component results in converting the sign of the topological charge in the centered optical vortex, the distance of the vortex conversion being about 0.05 of the wavelength.

Citation Download Citation

Bogdan Sokolenko, Maria Kudryavtseva, Alexey Zinovyev, Victor Konovalenko, and Alex Rubass "Optical vortex conversion in the elliptic vortex-beam propagating orthogonally to the crystal optical axis: the experiment", Proc. SPIE 8338, Tenth International Conference on Correlation Optics, 83380D (22 November 2011); https://doi.org/10.1117/12.921546

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