Title :
Highly efficient SHG in buried waveguides formed using annealed and reverse proton exchange in PPLN
Author :
Parameswaran, Krishnan R. ; Route, Roger K. ; Kurz, Jonathan R. ; Roussev, Rostislav V. ; Fejer, Martin M. ; Fujimura, Masatoshi
Author_Institution :
Edward L. Ginzton Lab., Stanford Univ., CA, USA
Abstract :
Optical frequency mixers use near-degenerate three-wave mixing in guided-wave quasi-phasematched interactions, where the waveguides were made by annealed proton exchange (APE) in periodically poled lithium niobate (PPLN). We present measurements of linear and nonlinear optical properties of buried waveguides formed by APE followed by reverse proton exchange in PPLN. The symmetry of the buried waveguides results in a four-fold improvement in conversion efficiency over that of APE guides. A spatial mode image is presented, along with a second harmonic generation tuning curve, where a peak efficiency of 150%/W-cm2 is observed
Keywords :
annealing; dielectric polarisation; ion exchange; lithium compounds; optical fabrication; optical harmonic generation; optical planar waveguides; optical tuning; optical wavelength conversion; LiNbO3; annealed proton exchange; buried waveguides; conversion efficiency; electric field poling; fundamental transverse modes; optical frequency mixers; periodically poled lithium niobate; quasi-phasematched interactions; reverse proton exchange; second harmonic generation tuning curve; spatial mode image; three-wave mixing interactions; Annealing; Frequency; Image converters; Lithium niobate; Nonlinear optics; Optical harmonic generation; Optical mixing; Optical tuning; Optical waveguides; Protons;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969033
