Surface periodic domain structures for waveguide applications

Author

Kokhanchik, Lyudmila S. ; Borodin, Maxim V. ; Burimov, Nikolay I. ; Shandarov, Stanislav M. ; Shcherbina, Vesta V. ; Volk, Tatyana R.

Author_Institution

Inst. of Microelectron. Technol. & High Purity Mater., Chernogolovka, Russia

Volume

59

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

1076

Lastpage

1084

Abstract

We report the results of fabrication and investigations of surface periodic domain structures created by a set of quasi-point e-beam irradiations both on the Y- and X-cuts of LiNbO₃, and on Ti:LiNbO₃ and Zn:LiNbO₃ planar waveguides. Domain gratings with spatial periods from 4.75 to 7.25 μm were formed by a 25-keV e-beam. Doses from 500 to 2000 μC/cm² were used for different structures to estimate optimal fabrication conditions. The investigations allowed the visualization of the formed surface domain structures, estimation of their uniformity, and determination of waveguide generation of the second optical harmonic. The surface structures can be used in optical devices for the realization of quasi-phasematched frequency conversion, which includes the creation of compact radiation sources based on waveguides.

Keywords

diffraction gratings; electron beam effects; lithium compounds; optical fabrication; optical harmonic generation; optical planar waveguides; surface structure; titanium; zinc; LiNbO₃; LiNbO₃:Ti; LiNbO₃:Zn; compact radiation sources; domain gratings; electron volt energy 25 keV; optical devices; optimal fabrication conditions; planar waveguides; quasiphase-matched frequency conversion; quasipoint e-beam irradiations; second optical harmonic generation; spatial periods; surface periodic domain structures; waveguide generation; Crystals; Optical surface waves; Optical waveguides; Radiation effects; Substrates; Surface treatment; Surface waves;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2012.2298

Filename

6217556