Repositorio
Institucional

Sanchez-Lopez, Maria del Mar

Cofre, Aaron#Vargas, Asticio#Torres-Ruiz, Fabian A.#Moreno, Ignacio

Geometrical-phase lens based optical system for the spin-splitting of vector beams

ELSEVIER SCI LTD

OPTICS AND LASERS IN ENGINEERING

en

In this work, we present a new optical lens system based on a polarization directed flat lens (geometric phase lens) designed to provide circular polarization split focusing in two real foci located at two different axial planes. We find the conditions to obtain two real back focal planes of the system, and the same focal length of opposite sign. In this situation, the system acts as a bifocal SAM split system with equal scale for both real foci. We experimentally demonstrate the optical spin dependent dual focus effect of the system. Then, we illuminate the system with vortex and vector beams generated by a q-plate and provide theoretical explanation within the Jones matrix formalism for the different orbital angular momentum (OAM) and spin angular momentum (SAM) states experimentally observed at the two focal planes. Finally, we show the interference of the two split focused components of the vector beam at the intermediate plane between the two focal planes. The resulting spiral interference pattern indicates the sign and value of the vector beam's topological charge. It can also be used to identify the vector beam of a given charge by the shift on the interference fringes. Therefore, the optical system can be useful as a new tool for analyzing OAM and SAM beams.

Artículo original

"This work has been financed by Generalitat Valenciana, Conselleria d'Educacio, Investigacio, Cultura i Esport (PROMETEO-2017-154) and by Ministerio de Economia, Industria y Competitividad of Spain and European Union (MIMECO/FEDER funds, ""Una manera de hacer Europa"" (grant FIS2015-66328-C3-3-R). A. Vargas and F. Torres-Ruiz acknowledge support from CONICYT/FONDECYT (grant 1151290). A. Cofre acknowledges Generalitat Valenciana for a grant of the Santiago Grisolia Program, Ref. 2015/073."

"Este trabajo ha sido financiado por la Generalitat Valenciana, la Conselleria d'Educacio, Investigacio, Cultura i Esport (PROMETEO-2017-154) y por el Ministerio de Economía, Industria y Competitividad de España y la Unión Europea (fondos MIMECO/FEDER, ""Una manera de hacer Europa"" (subvención FIS2015-66328-C3-3-R). A. Vargas y F. Torres-Ruiz agradecen el apoyo de CONICYT/FONDECYT (beca 1151290). A. Cofre agradece a la Generalitat Valenciana una beca del Programa Santiago Grisolia, Ref. 2015/073.

This work has been financed by Generalitat Valenciana, Conselleria d'Educacio, Investigacio, Cultura i Esport (PROMETEO-2017-154) and by Ministerio de Economia, Industria y Competitividad of Spain and European Union (MIMECO/FEDER funds, ""Una manera de hacer Europa"" (grant FIS2015-66328-C3-3-R). A. Vargas and F. Torres-Ruiz acknowledge support from CONICYT/FONDECYT (grant 1151290). A. Cofre acknowledges Generalitat Valenciana for a grant of the Santiago Grisolia Program, Ref. 2015/073."

10.1016/j.optlaseng.2018.06.017

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Vector beams# Geometric phase lens# Polarization interference

http://dx.doi.org/10.1016/j.optlaseng.2018.06.017

Optics

haces vectoriales# Lente de fase geométrica# Interferencia de polarización

Óptica

Otras Especialidades de la Física

Física de la Materia Condensada

WOS:000443665600047

Geometrical-phase lens based optical system for the spin-splitting of vector beams

Artículo original

version publicada

ELSEVIER SCI LTD

OPTICS AND LASERS IN ENGINEERING

Óptica

0143-8166

en

Generalitat Valenciana PROMETEO-2017-154#MINECO MIMECO/FEDER FIS2015-66328-C3-3-R#ANID CONICYT/FONDECYT 1151290#Generalitat Valenciana 2015/073.

Generalitat Valenciana, Conselleria d'Educacio, Investigacio, Cultura i Esport PROMETEO-2017-154

MINECO

EU MIMECO/FEDER FIS2015-66328-C3-3-R]

ANID CONICYT FONDECYT 1151290

Generalitat Valenciana 2015/073

"This work has been financed by Generalitat Valenciana, Conselleria d'Educacio, Investigacio, Cultura i Esport (PROMETEO-2017-154) and by Ministerio de Economia, Industria y Competitividad of Spain and European Union (MIMECO/FEDER funds, ""Una manera de hacer Europa"" (grant FIS2015-66328-C3-3-R). A. Vargas and F. Torres-Ruiz acknowledge support from CONICYT/FONDECYT (grant 1151290). A. Cofre acknowledges Generalitat Valenciana for a grant of the Santiago Grisolia Program, Ref. 2015/073."

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