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Tunable two-dimensional hexagonal phase array in domain engineered z-cut lithium niobate crystal

By M. Paturzo, P. De Natale, S. De Nicola, P. Ferraro, S. Mailis, R.W. Eason, G. Coppola, M. Iodice and M. Gioffré

Abstract

An optical phase array with tunable phase step is demonstrated. The phase array consists of a 2-dimensional hexagonal lattice of inverted ferroelectric domains fabricated on a z-cut lithium niobate substrate. The electro-optically tunable phase step is obtained by the application of an external electric field along the z axis of the crystal via transparent electrodes. Theoretical analysis and experimental results are presented showing that a tunable and flexible adaptive optical illuminator device can be realized by combining the electro-optic tunability with the Talbot effect. Generation of a multiplicity of light pattern is shown

Topics: QC, TK
Year: 2006
OAI identifier: oai:eprints.soton.ac.uk:46931
Provided by: e-Prints Soton

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