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Origin and enhancement of the second-order non-linear optical susceptibility induced in bismuth borate glasses by thermal poling

Origin and enhancement of the second-order non-linear optical susceptibility induced in bismuth borate glasses by thermal poling
Origin and enhancement of the second-order non-linear optical susceptibility induced in bismuth borate glasses by thermal poling
The second-order non-linear optical susceptibility of thermally poled glasses, chi(2), should be enhanced in proportion to the intrinsic third-order susceptibility chi(3), for a given frozen-in electric field (i.e. chi(2) = 3Edcchi(3)). In order to test this prediction, bismuth-borate (Bi2O3–ZnO–B2O3) glasses, for which chi(3) increased with increasing Bi2O3 content, were thermally poled and the second-order non-linear coefficient was determined. Poling conditions and current dynamics turned out to be very different from those in silica. Poling temperatures had to be relatively close to glass transition temperatures and the glass–electrode contact had to be intimate in order to induce the non-linearity which was located in a near-surface layer at the anode side. A poling mechanism was proposed which relied on proton migration, took into account ion injection and glass ionization, and was able to explain most of the experimental results. The chi(2) values increased with increasing chi(3) as predicted but did not exceed 0.7 pm/V. By comparison with silica, it was inferred that the dielectric breakdown strength Eb was lower in bismuth borate and decreased with increasing Bi2O3 content. This latter result demonstrated the importance to select glass compositions on the basis of both chi(3) and Eb for the purpose of enhancing chi(2).
0022-3093
2166-2177
Deparis, O.
6bb2a112-4df2-4902-9645-dd3af9a8cedd
Mezzapesa, F.P.
1fe96dc4-7d66-4a06-aa18-9ab5de416b5f
Corbari, C.
0d97e1c1-7a62-47c6-8f97-735f7946f93f
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Sakaguchi, K.
1604d295-67e7-45ed-866c-fee8d1d63c3f
Deparis, O.
6bb2a112-4df2-4902-9645-dd3af9a8cedd
Mezzapesa, F.P.
1fe96dc4-7d66-4a06-aa18-9ab5de416b5f
Corbari, C.
0d97e1c1-7a62-47c6-8f97-735f7946f93f
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Sakaguchi, K.
1604d295-67e7-45ed-866c-fee8d1d63c3f

Deparis, O., Mezzapesa, F.P., Corbari, C., Kazansky, P.G. and Sakaguchi, K. (2005) Origin and enhancement of the second-order non-linear optical susceptibility induced in bismuth borate glasses by thermal poling. Journal of Non-Crystalline Solids, 351 (27-29), 2166-2177. (doi:10.1016/j.jnoncrysol.2005.06.004).

Record type: Article

Abstract

The second-order non-linear optical susceptibility of thermally poled glasses, chi(2), should be enhanced in proportion to the intrinsic third-order susceptibility chi(3), for a given frozen-in electric field (i.e. chi(2) = 3Edcchi(3)). In order to test this prediction, bismuth-borate (Bi2O3–ZnO–B2O3) glasses, for which chi(3) increased with increasing Bi2O3 content, were thermally poled and the second-order non-linear coefficient was determined. Poling conditions and current dynamics turned out to be very different from those in silica. Poling temperatures had to be relatively close to glass transition temperatures and the glass–electrode contact had to be intimate in order to induce the non-linearity which was located in a near-surface layer at the anode side. A poling mechanism was proposed which relied on proton migration, took into account ion injection and glass ionization, and was able to explain most of the experimental results. The chi(2) values increased with increasing chi(3) as predicted but did not exceed 0.7 pm/V. By comparison with silica, it was inferred that the dielectric breakdown strength Eb was lower in bismuth borate and decreased with increasing Bi2O3 content. This latter result demonstrated the importance to select glass compositions on the basis of both chi(3) and Eb for the purpose of enhancing chi(2).

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Published date: August 2005

Identifiers

Local EPrints ID: 46953
URI: https://eprints.soton.ac.uk/id/eprint/46953
ISSN: 0022-3093
PURE UUID: 18810434-c4d4-4f9d-bfb6-02b67f96f89d

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Date deposited: 25 Jul 2007
Last modified: 13 Mar 2019 21:01

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