Fabrication and applications of lithium niobate micro/nano structures
Fabrication and applications of lithium niobate micro/nano structures
Nonlinear optical frequency conversion is reported from single crystal lithium niobate nanostructures. Structuring on the nanometer scale is achieved by a combination of ferroelectric domain inversion and chemical etching. A 2D hexagonal lattice of inverted ferroelectric domains is formed after selective application of an external electric field at room temperature. Long (15 hr) etching in hot (60°) HF acid results in differential etching of opposite ferroelectric domain faces while side etching sharpens the end point of the superstructures. The end structure terminates in pyramidal shaped tips of sub-wavelength dimensions and ultra sharp edges. A scanning electron microscopy (SEM) image of a tip array is shown in the attached figure. A High resolution side view of the sharp tip is shown in the inset picture. We have observed highly efficient nonlinear optical second harmonic generation (SHG) from single tips. The efficiency of SHG is two orders of magnitude higher as compared to that of the unstructured crystal.
Mailis, Sakellaris
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Paturzo, Melania
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Eason, Robert W.
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Lagoudakis, Pavlos
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Feldman, Jochen
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2004
Mailis, Sakellaris
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Paturzo, Melania
dd5012fe-ce27-4852-9ade-aa87911e55aa
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
Lagoudakis, Pavlos
ea50c228-f006-4edf-8459-60015d961bbf
Feldman, Jochen
ca57aa8c-4cc4-4fce-9a4f-09d2c58b63d0
Mailis, Sakellaris, Paturzo, Melania, Eason, Robert W., Lagoudakis, Pavlos and Feldman, Jochen
(2004)
Fabrication and applications of lithium niobate micro/nano structures.
8th International Symposium on Ferroic Domains and Micro- to Nanoscopic Structures (ISFD-8), Tsukuba, Japan.
24 - 27 Aug 2004.
1 pp
.
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Abstract
Nonlinear optical frequency conversion is reported from single crystal lithium niobate nanostructures. Structuring on the nanometer scale is achieved by a combination of ferroelectric domain inversion and chemical etching. A 2D hexagonal lattice of inverted ferroelectric domains is formed after selective application of an external electric field at room temperature. Long (15 hr) etching in hot (60°) HF acid results in differential etching of opposite ferroelectric domain faces while side etching sharpens the end point of the superstructures. The end structure terminates in pyramidal shaped tips of sub-wavelength dimensions and ultra sharp edges. A scanning electron microscopy (SEM) image of a tip array is shown in the attached figure. A High resolution side view of the sharp tip is shown in the inset picture. We have observed highly efficient nonlinear optical second harmonic generation (SHG) from single tips. The efficiency of SHG is two orders of magnitude higher as compared to that of the unstructured crystal.
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Mailis Abstract isfd-8.pdf
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Published date: 2004
Venue - Dates:
8th International Symposium on Ferroic Domains and Micro- to Nanoscopic Structures (ISFD-8), Tsukuba, Japan, 2004-08-24 - 2004-08-27
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Local EPrints ID: 41707
URI: http://eprints.soton.ac.uk/id/eprint/41707
PURE UUID: edf05142-86b4-4a21-abd0-6a46b0a10c50
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Date deposited: 10 May 2007
Last modified: 16 Mar 2024 02:38
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Contributors
Author:
Sakellaris Mailis
Author:
Melania Paturzo
Author:
Robert W. Eason
Author:
Pavlos Lagoudakis
Author:
Jochen Feldman
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