Self-Trapping of Light Using the Pancharatnam-Berry Phase

Since its introduction by Berry in 1984, the geometric phase has become of fundamental importance in physics, with applications ranging from solid-state physics to optics. In optics, the Pancharatnam-Berry phase allows the tailoring of optical beams by a local control of their polarization. Here, we...

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Autores principales:	Chandroth P. Jisha, Alessandro Alberucci, Jeroen Beeckman, Stefan Nolte
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2019
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/128fcc4a774f46fd86d2079a49fbefcc
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id	oai:doaj.org-article:128fcc4a774f46fd86d2079a49fbefcc
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spelling	oai:doaj.org-article:128fcc4a774f46fd86d2079a49fbefcc2021-12-02T11:45:03ZSelf-Trapping of Light Using the Pancharatnam-Berry Phase10.1103/PhysRevX.9.0210512160-3308https://doaj.org/article/128fcc4a774f46fd86d2079a49fbefcc2019-06-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.9.021051http://doi.org/10.1103/PhysRevX.9.021051https://doaj.org/toc/2160-3308Since its introduction by Berry in 1984, the geometric phase has become of fundamental importance in physics, with applications ranging from solid-state physics to optics. In optics, the Pancharatnam-Berry phase allows the tailoring of optical beams by a local control of their polarization. Here, we discuss light propagation in the presence of an intensity-dependent local modulation of the Pancharatnam-Berry phase. The corresponding self-modulation of the wave front counteracts the natural spreading due to diffraction; i.e., self-focusing takes place. No refractive index variation is associated with the self-focusing: The confinement is uniquely due to a nonlinear spin-orbit interaction. The phenomenon is investigated, both theoretically and experimentally, by considering the reorientational nonlinearity in liquid crystals, where light is able to rotate the local optical axis through an intensity-dependent optical torque. Our discoveries pave the way to the investigation of a new family of nonlinear waves featuring a strong interaction between the spin and the orbital degrees of freedom.Chandroth P. JishaAlessandro AlberucciJeroen BeeckmanStefan NolteAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 9, Iss 2, p 021051 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Chandroth P. Jisha Alessandro Alberucci Jeroen Beeckman Stefan Nolte Self-Trapping of Light Using the Pancharatnam-Berry Phase
description	Since its introduction by Berry in 1984, the geometric phase has become of fundamental importance in physics, with applications ranging from solid-state physics to optics. In optics, the Pancharatnam-Berry phase allows the tailoring of optical beams by a local control of their polarization. Here, we discuss light propagation in the presence of an intensity-dependent local modulation of the Pancharatnam-Berry phase. The corresponding self-modulation of the wave front counteracts the natural spreading due to diffraction; i.e., self-focusing takes place. No refractive index variation is associated with the self-focusing: The confinement is uniquely due to a nonlinear spin-orbit interaction. The phenomenon is investigated, both theoretically and experimentally, by considering the reorientational nonlinearity in liquid crystals, where light is able to rotate the local optical axis through an intensity-dependent optical torque. Our discoveries pave the way to the investigation of a new family of nonlinear waves featuring a strong interaction between the spin and the orbital degrees of freedom.
format	article
author	Chandroth P. Jisha Alessandro Alberucci Jeroen Beeckman Stefan Nolte
author_facet	Chandroth P. Jisha Alessandro Alberucci Jeroen Beeckman Stefan Nolte
author_sort	Chandroth P. Jisha
title	Self-Trapping of Light Using the Pancharatnam-Berry Phase
title_short	Self-Trapping of Light Using the Pancharatnam-Berry Phase
title_full	Self-Trapping of Light Using the Pancharatnam-Berry Phase
title_fullStr	Self-Trapping of Light Using the Pancharatnam-Berry Phase
title_full_unstemmed	Self-Trapping of Light Using the Pancharatnam-Berry Phase
title_sort	self-trapping of light using the pancharatnam-berry phase
publisher	American Physical Society
publishDate	2019
url	https://doaj.org/article/128fcc4a774f46fd86d2079a49fbefcc
work_keys_str_mv	AT chandrothpjisha selftrappingoflightusingthepancharatnamberryphase AT alessandroalberucci selftrappingoflightusingthepancharatnamberryphase AT jeroenbeeckman selftrappingoflightusingthepancharatnamberryphase AT stefannolte selftrappingoflightusingthepancharatnamberryphase
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Self-Trapping of Light Using the Pancharatnam-Berry Phase

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