INFRARED CORRECTED SELLMEIER COEFFICIENTS FOR CONGRUENTLY GROWN LITHIUM-NIOBATE AND 5 MOL. PERCENT MAGNESIUM OXIDE-DOPED LITHIUM-NIOBATE

The growth in the uses of lithium niobate for infrared applications ha s created a need for knowledge of its optical characteristics in the i nfrared spectral region for the purpose of designing phase-matched or quasi-phase-matched devices. We report measurements of the refractive indices of congruently grown lithium niobate and lithium niobate doped with 5 mol. % magnesium oxide. We use these results to predict the tu ning curve of a room-temperature multigrating optical parametric oscil lator in each material. (C) 1997 Optical Society of America [S0740-322 4(97)00612-7].