Title :
Efficient frequency doubling in reverse proton exchanged lithium niobate waveguides
Author :
Di Lallo, A. ; Conti, C. ; Cino, A. ; Assanto, G.
Author_Institution :
Dept. of Electron. Eng., Rome Univ., Italy
fDate :
4/1/2001 12:00:00 AM
Abstract :
We propose a novel approach for efficient frequency doubling of near infrared light, using the coupled system of buried and surface waveguides obtainable by reverse proton exchange in z-cut lithium niobate. In such guides, supporting TM and TE polarizations, respectively, in spite of the use of the d/sub 31/ nonlinear element, we predict conversion efficiencies as high as 90 or 14% μm/W cm in planar structures excited at 1.32 μm.
Keywords :
ion exchange; lithium compounds; optical harmonic generation; optical planar waveguides; optical waveguide theory; 1.32 mum; 14 percent; 90 percent; LiNbO/sub 3/; TE polarization; TM polarization; conversion efficiencies; d/sub 31/ nonlinear element; frequency doubling; lithium niobate waveguides; near infrared light; planar structures; reverse proton exchange; reverse proton exchanged; surface waveguides; z-cut lithium niobate; Frequency; Integrated optics; Lithium niobate; Nonlinear optics; Optical surface waves; Optical waveguides; Protons; Surface waves; Tellurium; Temperature;
Journal_Title :
Photonics Technology Letters, IEEE
