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Opt Express. 2008 Feb 18;16(4):2336-50.

Direct-writing of inverted domains in lithium niobate using a continuous wave ultra violet laser.

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1
Optoelectronics Research Centre, University of Southampton, Hants, S017 1BJ, UK. acm@orc.soton.ac.uk

Abstract

The inversion of ferroelectric domains in lithium niobate by a scanning focused ultra-violet laser beam (lambda = 244 nm) is demonstrated. The resulting domain patterns are interrogated using piezoresponse force microscopy and by chemical etching in hydrofluoric acid. Direct ultra-violet laser poling was observed in un-doped congruent, iron doped congruent and titanium in-diffused congruent lithium niobate single crystals. A model is proposed to explain the mechanism of domain inversion.

PMID:
18542312
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