Title :
MgO:LiNbO
Waveguide Quasi-Phase-Matched Second-Harmonic Generation Devices Fabricated by Two-Step Voltage Application Under UV Light
Author :
Fujimura, Masatoshi ; Kitado, Eri ; Inoue, Toshiyuki ; Suhara, Toshiaki
Author_Institution :
Grad. Sch. Eng., Osaka Univ., Suita, Japan
Abstract :
A new simple method for formation of MgO:LiNbO3 domain inverted gratings is demonstrated. Periodic domain structure was formed on -z face by first voltage application under ultraviolet (UV) light with periodic intensity distribution. Following second voltage application without UV resulted in periodic structure continuing through crystal thickness. A waveguide quasi-phase-matched (QPM) nonlinear-optic device was fabricated by the method and characterized. The device performance agreed with approximate theoretical prediction, and high applicability of the method to QPM device fabrication was demonstrated.
Keywords :
diffraction gratings; lithium compounds; magnesium compounds; optical fabrication; optical harmonic generation; optical phase matching; optical waveguides; periodic structures; LiNbO3:MgO; UV light; inverted gratings; nonlinear optic device; periodic domain structure; periodic intensity distribution; two step voltage application; waveguide quasiphase matched second harmonic generation devices; Crystals; Electrodes; Face; Gratings; Lighting; Lithium niobate; Optical waveguides; $hbox{MgO:LiNbO}_{3}$; Domain inversion; integrated optics; nonlinear optics; quasi-phase-matching;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2160531