The University of Southampton
University of Southampton Institutional Repository

The problem of achieving high second-order nonlinearities in glasses: The role of electric conductivity in poling of high index glasses

The problem of achieving high second-order nonlinearities in glasses: The role of electric conductivity in poling of high index glasses
The problem of achieving high second-order nonlinearities in glasses: The role of electric conductivity in poling of high index glasses
Efficient thermal poling of electronically conducting glass is prevented by the inherent difficulty to record a large electrostatic field within such glasses. To overcome this limitation, a waveguide/substrate configuration has been proposed, in which the glass for poling was deposited as a film of appropriate thickness on a substrate chosen for its higher ionic conductivity. Owing to this configuration, the poling voltage drops entirely across the glass film, allowing high electrostatic field to be recorded in spite of the high electronic conductivity of the glass. The proposed method was demonstrated here in the case of bismuth-zinc-borate glasses, which possess high potential for poling because of their high intrinsic χ(3). A four-fold enhancement of χ(2) compared to bulk glass, from ~ 0.5 to ~ 2 pm/V, is demonstrated. It is also shown that the χ(2) values obtained are the highest sustainable by the glass limited by the onset of nonlinear conductivity. The waveguide/substrate configuration intrinsically allows obtaining perfect overlap of the poling induced second-order nonlinearity with the guiding region of the waveguide. An equivalent RC-circuit model describing the poled glass reveals that the value of the poling-induced second-order nonlinearity is strongly dependent on the ratio β between ionic and electronic conductivity. The most promising glass systems for poling are found to be the ones displaying the highest product χ(3)β. This work is performed on bismuth-zinc-borate heavy metal oxide glasses but the waveguide/substrate configuration proposed here is likely to be equally successful in enhancing the second-order nonlinearity in high χ(3) electronic conducting glasses such as for example telluride and chalcogenide glasses.
high fields effects h150, electronic conductivity e240, second harmonic generation s117, optical waveguides o120
0022-3093
2742-2749
Corbari, C.
273904e8-5f90-4110-bc17-3d3f2c27d461
Ajitdoss, L.C.
ee7b7375-2b3c-48ad-85b8-f4e8843ac21b
Carvalho, I.C.S.
4b75ee1f-91e4-417e-a72d-4b9c3c788ba6
Deparis, O.
6bb2a112-4df2-4902-9645-dd3af9a8cedd
Mezzapesa, F.P.
1fe96dc4-7d66-4a06-aa18-9ab5de416b5f
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Sakaguchi, K.
1604d295-67e7-45ed-866c-fee8d1d63c3f
Corbari, C.
273904e8-5f90-4110-bc17-3d3f2c27d461
Ajitdoss, L.C.
ee7b7375-2b3c-48ad-85b8-f4e8843ac21b
Carvalho, I.C.S.
4b75ee1f-91e4-417e-a72d-4b9c3c788ba6
Deparis, O.
6bb2a112-4df2-4902-9645-dd3af9a8cedd
Mezzapesa, F.P.
1fe96dc4-7d66-4a06-aa18-9ab5de416b5f
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Sakaguchi, K.
1604d295-67e7-45ed-866c-fee8d1d63c3f

Corbari, C., Ajitdoss, L.C., Carvalho, I.C.S., Deparis, O., Mezzapesa, F.P., Kazansky, P.G. and Sakaguchi, K. (2010) The problem of achieving high second-order nonlinearities in glasses: The role of electric conductivity in poling of high index glasses. Journal of Non-Crystalline Solids, 356 (50-51), 2742-2749. (doi:10.1016/j.jnoncrysol.2010.09.033).

Record type: Article

Abstract

Efficient thermal poling of electronically conducting glass is prevented by the inherent difficulty to record a large electrostatic field within such glasses. To overcome this limitation, a waveguide/substrate configuration has been proposed, in which the glass for poling was deposited as a film of appropriate thickness on a substrate chosen for its higher ionic conductivity. Owing to this configuration, the poling voltage drops entirely across the glass film, allowing high electrostatic field to be recorded in spite of the high electronic conductivity of the glass. The proposed method was demonstrated here in the case of bismuth-zinc-borate glasses, which possess high potential for poling because of their high intrinsic χ(3). A four-fold enhancement of χ(2) compared to bulk glass, from ~ 0.5 to ~ 2 pm/V, is demonstrated. It is also shown that the χ(2) values obtained are the highest sustainable by the glass limited by the onset of nonlinear conductivity. The waveguide/substrate configuration intrinsically allows obtaining perfect overlap of the poling induced second-order nonlinearity with the guiding region of the waveguide. An equivalent RC-circuit model describing the poled glass reveals that the value of the poling-induced second-order nonlinearity is strongly dependent on the ratio β between ionic and electronic conductivity. The most promising glass systems for poling are found to be the ones displaying the highest product χ(3)β. This work is performed on bismuth-zinc-borate heavy metal oxide glasses but the waveguide/substrate configuration proposed here is likely to be equally successful in enhancing the second-order nonlinearity in high χ(3) electronic conducting glasses such as for example telluride and chalcogenide glasses.

Text
4937.pdf - Accepted Manuscript
Download (239kB)

More information

Published date: November 2010
Keywords: high fields effects h150, electronic conductivity e240, second harmonic generation s117, optical waveguides o120
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 176769
URI: http://eprints.soton.ac.uk/id/eprint/176769
ISSN: 0022-3093
PURE UUID: afb75322-0935-449e-b475-85db24f6d905

Catalogue record

Date deposited: 10 Mar 2011 16:23
Last modified: 14 Mar 2024 02:40

Export record

Altmetrics

Contributors

Author: C. Corbari
Author: L.C. Ajitdoss
Author: I.C.S. Carvalho
Author: O. Deparis
Author: F.P. Mezzapesa
Author: P.G. Kazansky
Author: K. Sakaguchi

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×