Electro-optic modulated phase array in hexagonally poled lithium niobate for flexible array illuminator device
Authors: Paturzo M., Ferraro P., De Nicola S., De Natale P., Mailis S., Eason R. W., Coppola G., Iodice M., Gioffré M.
Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy; European Laboratory for Nonlinear Spectroscopy (LENS), Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy; Optoelectronics Research Centre, University of Southampton, Highfield, Southampton, SO17 1BJ UK; Istituto per la Microelettronica e i Microsistemi del CNR, Via P. Castellino 111, 80131 Napoli, Italy
Abstract: We present an adaptive and dynamic hexagonal electro-optic phase array. The proposed device consists of a 2-dimensional hexagonal array of periodically inverted ferroelectric domains, along the Z-axis, in lithium niobate crystals. The phase step is achieved via the application of an external electric field, along the z-axis, through transparent electrodes. Thanks to the electro-optic effect the phase step can changed with continuity over all the 0 to 2 pi by applying a variable voltage. In this way different patterns can be generated. In fact, one important property of this new proposed configuration of array iluminator is the intrinsic flexibility.
Volume: 352 Pages from: 342 to: 347