Latent light-assisted poling of LiNbO3
Latent light-assisted poling of LiNbO3
The observation of latent light-assisted poling (LAP) in lithium niobate single crystals is reported. More specifically, the nucleation field is reduced and remains reduced for an extended time period (up to several hours) after irradiation with ultrafast (~150 fs) laser illumination at a wavelength of 400 nm. The maximum nucleation field reduction measured using latent LAP (62%) was significantly higher in comparison with regular non-time-delayed LAP (41%) under identical irradiation conditions in undoped congruent lithium niobate crystals. No latent LAP effect was observed in MgO doped crystals for the experimental conditions used, despite the strong effect observed using regular LAP. The latent LAP effect is attributed to the formation of a slowly decaying photo-induced space charge distribution which assists local ferroelectric domain nucleation. The dynamics of latent-LAP are compared with the dynamics of photorefractive grating decay, recorded in lithium niobate crystals of different doping, confirming the space charge hypothesis.
18681-18692
Ying, Y.J.
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Valdivia, C.E.
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Sones, C.L.
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Eason, R.W.
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Mailis, S.
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12 October 2009
Ying, Y.J.
1cc13d62-ee04-4ca3-b0b8-e60a523dc145
Valdivia, C.E.
d9e77b23-1e72-4302-a11c-e6af43f0e518
Sones, C.L.
9de9d8ee-d394-46a5-80b7-e341c0eed0a8
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Mailis, S.
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Ying, Y.J., Valdivia, C.E., Sones, C.L., Eason, R.W. and Mailis, S.
(2009)
Latent light-assisted poling of LiNbO3.
Optics Express, 17 (21), .
(doi:10.1364/OE.17.018681).
Abstract
The observation of latent light-assisted poling (LAP) in lithium niobate single crystals is reported. More specifically, the nucleation field is reduced and remains reduced for an extended time period (up to several hours) after irradiation with ultrafast (~150 fs) laser illumination at a wavelength of 400 nm. The maximum nucleation field reduction measured using latent LAP (62%) was significantly higher in comparison with regular non-time-delayed LAP (41%) under identical irradiation conditions in undoped congruent lithium niobate crystals. No latent LAP effect was observed in MgO doped crystals for the experimental conditions used, despite the strong effect observed using regular LAP. The latent LAP effect is attributed to the formation of a slowly decaying photo-induced space charge distribution which assists local ferroelectric domain nucleation. The dynamics of latent-LAP are compared with the dynamics of photorefractive grating decay, recorded in lithium niobate crystals of different doping, confirming the space charge hypothesis.
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oe-17-21-18681
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Published date: 12 October 2009
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Local EPrints ID: 70951
URI: http://eprints.soton.ac.uk/id/eprint/70951
ISSN: 1094-4087
PURE UUID: 28078296-a809-4ec7-a2cf-4fc2a9a47cb5
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:33
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Author:
Y.J. Ying
Author:
C.E. Valdivia
Author:
S. Mailis
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