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Nanoscale surface domain formation on the +z face of lithium niobate by pulsed UV laser illumination

Nanoscale surface domain formation on the +z face of lithium niobate by pulsed UV laser illumination
Nanoscale surface domain formation on the +z face of lithium niobate by pulsed UV laser illumination
Single-crystal congruent lithium niobate samples have been illuminated on the +z crystal face by pulsed ultraviolet laser wavelengths below (248 nm) and around (298-329 nm) the absorption edge. Following exposure, etching with hydrofluoric acid reveals highly regular precise domain-like features of widths ~150-300 nm, exhibiting distinct three-fold symmetry. Examination of illuminated unetched areas by scanning force microscopy shows a corresponding contrast in piezoelectric response. These observations indicate the formation of nanoscale ferroelectric surface domains, whose depth has been measured via focused ion beam milling to be ~2 micron. We envisage this direct optical poling technique as a viable route to precision domain-engineered structures for waveguide and other surface applications.
0003-6951
022906_1-022906_3
Valdivia, C.E.
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Sones, C.L.
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Scott, J.G.
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Mailis, S.
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Eason, R.W.
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Scrymgeour, D.A.
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Gopalan, V.
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Jungk, T.
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Soergel, E.
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Clark, I.
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Valdivia, C.E.
d9e77b23-1e72-4302-a11c-e6af43f0e518
Sones, C.L.
9de9d8ee-d394-46a5-80b7-e341c0eed0a8
Scott, J.G.
a5e576f1-39c6-4c3b-a0e2-42e388e9b583
Mailis, S.
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Eason, R.W.
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Scrymgeour, D.A.
c0b8c62e-b21e-4691-83f2-d3eaf539d601
Gopalan, V.
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Jungk, T.
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Soergel, E.
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Clark, I.
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Valdivia, C.E., Sones, C.L., Scott, J.G., Mailis, S., Eason, R.W., Scrymgeour, D.A., Gopalan, V., Jungk, T., Soergel, E. and Clark, I. (2005) Nanoscale surface domain formation on the +z face of lithium niobate by pulsed UV laser illumination. Applied Physics Letters, 86 (2), 022906_1-022906_3. (doi:10.1063/1.1849414).

Record type: Article

Abstract

Single-crystal congruent lithium niobate samples have been illuminated on the +z crystal face by pulsed ultraviolet laser wavelengths below (248 nm) and around (298-329 nm) the absorption edge. Following exposure, etching with hydrofluoric acid reveals highly regular precise domain-like features of widths ~150-300 nm, exhibiting distinct three-fold symmetry. Examination of illuminated unetched areas by scanning force microscopy shows a corresponding contrast in piezoelectric response. These observations indicate the formation of nanoscale ferroelectric surface domains, whose depth has been measured via focused ion beam milling to be ~2 micron. We envisage this direct optical poling technique as a viable route to precision domain-engineered structures for waveguide and other surface applications.

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Published date: 2005

Identifiers

Local EPrints ID: 16073
URI: https://eprints.soton.ac.uk/id/eprint/16073
ISSN: 0003-6951
PURE UUID: 9bd38c27-1ac4-49aa-b646-53c55d6887c7
ORCID for S. Mailis: ORCID iD orcid.org/0000-0001-8100-2670
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

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Date deposited: 23 Jun 2005
Last modified: 12 Nov 2019 02:04

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