Photorefractive light needles in glassy nanodisordered KNTN

D. Pierangeli; J. Parravicini; F. Di Mei; G. B. Parravicini; A. J. Agranat; E. Del Re

doi:10.1364/OL.39.001657

Photorefractive light needles in glassy nanodisordered KNTN

D. Pierangeli, J. Parravicini, F. Di Mei, G. B. Parravicini, A. J. Agranat, E. Del Re^*

^*Corresponding author for this work

Department of Applied Physics

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

25 Scopus citations

Abstract

We study the formation of 2D self-trapped beams in nanodisordered potassium-sodium-tantalate-niobate (KNTN) cooled below the dynamic glass transition. Supercooling is shown to accelerate the photorefractive response and enhance steady-state anisotropy. Effects in the excited state are attributed to the anomalous slim-loop polarization curve typical of relaxors dominated by non-interacting polar-nano-regions.

Original language	English
Pages (from-to)	1657-1660
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	6
DOIs	https://doi.org/10.1364/OL.39.001657
State	Published - 15 Mar 2014

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abstract = "We study the formation of 2D self-trapped beams in nanodisordered potassium-sodium-tantalate-niobate (KNTN) cooled below the dynamic glass transition. Supercooling is shown to accelerate the photorefractive response and enhance steady-state anisotropy. Effects in the excited state are attributed to the anomalous slim-loop polarization curve typical of relaxors dominated by non-interacting polar-nano-regions.",

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AU - Agranat, A. J.

AU - Del Re, E.

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AB - We study the formation of 2D self-trapped beams in nanodisordered potassium-sodium-tantalate-niobate (KNTN) cooled below the dynamic glass transition. Supercooling is shown to accelerate the photorefractive response and enhance steady-state anisotropy. Effects in the excited state are attributed to the anomalous slim-loop polarization curve typical of relaxors dominated by non-interacting polar-nano-regions.

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Photorefractive light needles in glassy nanodisordered KNTN

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