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.
Photorefractive light needles in glassy nanodisordered KNTN / Pierangeli, Davide; J., Parravicini; F., Di Mei; G. B., Parravicini; A. J., Agranat; DEL RE, Eugenio. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 39:6(2014), pp. 1657-1660. [10.1364/ol.39.001657]
Photorefractive light needles in glassy nanodisordered KNTN
PIERANGELI, DAVIDE;F. Di Mei;DEL RE, EUGENIO
2014
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.| File | Dimensione | Formato | |
|---|---|---|---|
|
OptLett.39.1657_2014.pdf
accesso aperto
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
588.81 kB
Formato
Adobe PDF
|
588.81 kB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
