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Thermal poling of silica in air and under vacuum: the influence of charge transport on second harmonic generation

Thermal poling of silica in air and under vacuum: the influence of charge transport on second harmonic generation
Thermal poling of silica in air and under vacuum: the influence of charge transport on second harmonic generation
A comparison between thermal poling of silica in air and in vacuum is reported. It is shown that the second-order susceptibility and thickness of the nonlinear layer as well as their time evolution are highly dependent on the surrounding poling atmosphere. In the vacuum case a charge distribution (under the anode) more complex and broader than that for the air case has also been revealed by laser induced pressure pulse measurements. A multiple charge carrier model can explain the formation and evolution of the depletion region under the anode. The findings are relevant to achieve improved nonlinearities in fibre and waveguide devices.
0003-6951
2423-[3pp]
Pruneri, V.
0e97eb94-b682-409f-a107-ae6b84763f02
Samoggia, F.
fce8058c-01ef-4fa1-bfb6-c4fe54a4a7e5
Bonfrate, G.
8bc08494-13f7-48f8-b630-f283d6ffd6d5
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Yang, G.M.
8354f8e2-ad17-478d-a767-5e97844a55b7
Pruneri, V.
0e97eb94-b682-409f-a107-ae6b84763f02
Samoggia, F.
fce8058c-01ef-4fa1-bfb6-c4fe54a4a7e5
Bonfrate, G.
8bc08494-13f7-48f8-b630-f283d6ffd6d5
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Yang, G.M.
8354f8e2-ad17-478d-a767-5e97844a55b7

Pruneri, V., Samoggia, F., Bonfrate, G., Kazansky, P.G. and Yang, G.M. (1999) Thermal poling of silica in air and under vacuum: the influence of charge transport on second harmonic generation. Applied Physics Letters, 74 (17), 2423-[3pp]. (doi:10.1063/1.123868).

Record type: Article

Abstract

A comparison between thermal poling of silica in air and in vacuum is reported. It is shown that the second-order susceptibility and thickness of the nonlinear layer as well as their time evolution are highly dependent on the surrounding poling atmosphere. In the vacuum case a charge distribution (under the anode) more complex and broader than that for the air case has also been revealed by laser induced pressure pulse measurements. A multiple charge carrier model can explain the formation and evolution of the depletion region under the anode. The findings are relevant to achieve improved nonlinearities in fibre and waveguide devices.

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Published date: April 1999

Identifiers

Local EPrints ID: 77832
URI: http://eprints.soton.ac.uk/id/eprint/77832
ISSN: 0003-6951
PURE UUID: 66518f15-e451-43f0-804c-c589850e0201

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Date deposited: 11 Mar 2010
Last modified: 13 Jul 2021 16:32

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Contributors

Author: V. Pruneri
Author: F. Samoggia
Author: G. Bonfrate
Author: P.G. Kazansky
Author: G.M. Yang

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