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Novel waveguided PPLN-SHG device was demonstrated. Two type of dual-phase modulated PPLN device was fabricated and investigated. Inequilateral-type was similar to previously reported. Equilateral-type was newly proposed and demonstrated for first time.
A novel scheme of waveguide SHG device is shown. It uses z-cut lithium niobate doped with 5% MgO, and has three periodically poled areas (PP1, PP2, PP3) and two electrooptical phase modulators (PM1, PM2) on an optical waveguide made by proton exchanging. We termed it 'DPM-PPLN' waveguide. Applying voltage on PM2 can slip the phase-relation between fundamental and SH wave from PP1 area, for instance...
Summary form only given. Recently the fabrication of active waveguide on an appropriate substrate has received an increasing amount of interest. Barium titanate (BaTiO/sub 3/) is one of the attractive materials for such applications. In this study we describe the fabrication of BaTiO/sub 3/ and BaTiO/sub 3/:Nd thin films by pulsed-laser deposition process, and their optical nonlinear and fluorescent...
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