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

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

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

An optical phase array with tunable phase step is demonstrated. The phase array consists of a twodimensional 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 patterns is shown.

Original languageEnglish
Pages (from-to)3164-3166
Number of pages3
JournalOptics Letters
Volume31
Issue number21
DOIs
Publication statusPublished - 1 Nov 2006
Externally publishedYes

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