Investigation on overpolled Lithium Niobate patterned crystal

Year: 2003

Authors: Grilli S., De Nicola S., Ferraro P., Finizio A., De Natale P., Iodice M., Pierattini G.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Sez. di Napoli, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto di Cibernetica “E. Caianiello” del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Istituto per la Microelettronica e i Microsistemi (IMM) del CNR, Sez. di Napoli, Via Diocleziano 328, 80124 Napoli, Italy

Abstract: We investigate the domain structure obtained, on overpoled both sides polished z-cut Lithium Niobate crystal sample by applying an electric field on periodic liquid electrodes. Lithium Niobate sample was spatially patterned with photoresist by use of interference photolithographic process. The sample was then etched in a mixture of hydrofluoric and nitric acid to reveal the reversed domains. The different etch rate of the two Opposite z faces of the crystal domains allowed to measure the surface profile of the sample by using a profilometer. Overpoling the crystal caused the appearance of high density and submicrometer spacing single dot domains vertically aligned along the direction of the interference fringes in the patterned region.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 4829      Pages from: 757  to: 758

KeyWords: lithium niobate; electric field poling;
DOI: 10.1117/12.529994

Citations: 2
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