Ordered nano-scale domains in lithium niobate single crystals via phase-mask assisted all-optical poling


Wellington, I.T., Valdivia, C.E., Sono, T.J., Sones, C.L., Mailis, S. and Eason, R.W. (2007) Ordered nano-scale domains in lithium niobate single crystals via phase-mask assisted all-optical poling. Applied Surface Science, 253, (9), 4215-4219. (doi:10.1016/j.apsusc.2006.09.018).

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Description/Abstract

We report the formation of directionally-ordered nanoscale surface domains on the +z face of undoped congruent lithium niobate single crystals by using UV illumination through a phase mask with an energy fluence between ~90mj/cm2 and 150 mJ/cm2 at λ = 266 nm. We clearly show here that the UV-induced surface ferroelectric domains nucleate and then propagate along the maxima of laser intensity produced by the phase mask, thus enabling a degree of control over this all-optical poling process. Acid etching of the illuminated crystal faces was employed to reveal the induced domain nature and the spatial structure of the formed nanoscale domains.

Item Type: Article
ISSNs: 0169-4332 (print)
Related URLs:
Keywords: lithium niobate, ferroelectric domain inversion, chemical etching
Subjects: T Technology > TP Chemical technology
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 46923
Date Deposited: 09 Aug 2007
Last Modified: 27 Mar 2014 18:30
Contact Email Address: itw@orc.soton.ac.uk
URI: http://eprints.soton.ac.uk/id/eprint/46923

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