Title :
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
fDate :
6/1/2012 12:00:00 AM
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;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2012.2298
