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Proceedings Paper

Investigation on poling of lithium niobate patterned by interference lithography
Author(s): Simonetta Grilli; Sergio De Nicola; Pietro Ferraro; Andrea Finizio; Paolo De Natale; Giovanni Pierattini; M. Chiarini
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Paper Abstract

We realized one and two dimensional periodic ferroelectric domain structures obtained by an electric-field poling process applied to 500μm thick Lithium Niobate crystal samples patterned by means of interference lithography. The fringe pattern is realized using a Michelson interferometric set-up and a He-Cd laser. We report on the appearance of high density and micrometer-sized single dot domains aligned along the direction of the interference fringes, as consequence of overpoling procedures. These structures are similar to those induced by back-switching. The effect seems to be originating by inverted domains’ merging under the photoresist fringe pattern after spreading. We investigate the possibility to obtain a highly regular and homogeneous dot-structure which can find application for photonic crystals technology and nonlinear optics.

Paper Details

Date Published: 3 April 2003
PDF: 8 pages
Proc. SPIE 4944, Integrated Optical Devices: Fabrication and Testing, (3 April 2003); doi: 10.1117/12.472011
Show Author Affiliations
Simonetta Grilli, INOA (Italy)
Sergio De Nicola, ICIB-CNR (Italy)
Pietro Ferraro, IMM-CNR (Italy)
Andrea Finizio, ICIB-CNR (Italy)
Paolo De Natale, INOA (Italy)
Giovanni Pierattini, ICIB-CNR (Italy)
M. Chiarini, IMM-CNR (Italy)

Published in SPIE Proceedings Vol. 4944:
Integrated Optical Devices: Fabrication and Testing

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