Tunable two-dimensional hexagonal phase array in domain-engineered Z-cut lithium niobate crystal.
Opt Lett
; 31(21): 3164-6, 2006 Nov 01.
Article
in En
| MEDLINE
| ID: mdl-17041669
ABSTRACT
An optical phase array with tunable phase step is demonstrated. The phase array consists of a two-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 patterns is shown.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Lett
Year:
2006
Document type:
Article
Affiliation country:
Italy