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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 8 — Dec. 1, 2011
  • pp: 1433–1438

In situ observation of light-assisted domain reversal in lithium niobate crystals

Hongde Liu, Meiling Zhu, Qirui Liang, Wei Li, Shiguo Liu, Ling Zhang, Shaolin Chen, Yongfa Kong, and Jingjun Xu  »View Author Affiliations


Optical Materials Express, Vol. 1, Issue 8, pp. 1433-1438 (2011)
http://dx.doi.org/10.1364/OME.1.001433


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Abstract

A digital holography interferometry was applied for in situ observation of the light-assisted domain reversal in the lithium niobate doped with MgO. The evolution of the light-assisted domain nucleation and growth was reconstructed, and we found a flat-top reversed domain state during the two stages: I. the reversed domain tip propagates in depth and progressively flattens its edge profile; II. the polarization reversal front abruptly changes shape with the formation of two fast-propagating lateral tips. According to experiments and analysis, we find a Gaussian-shaped space charge field and present a model based on a redistribution of the photo-excited carriers to explain the process of light-assisted domain reversal.

© 2011 OSA

OCIS Codes
(090.2880) Holography : Holographic interferometry
(160.2260) Materials : Ferroelectrics
(160.3730) Materials : Lithium niobate

ToC Category:
Ferroelectrics

History
Original Manuscript: September 6, 2011
Revised Manuscript: October 14, 2011
Manuscript Accepted: October 14, 2011
Published: November 2, 2011

Citation
Hongde Liu, Meiling Zhu, Qirui Liang, Wei Li, Shiguo Liu, Ling Zhang, Shaolin Chen, Yongfa Kong, and Jingjun Xu, "In situ observation of light-assisted domain reversal in lithium niobate crystals," Opt. Mater. Express 1, 1433-1438 (2011)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-1-8-1433


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