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The growth of LN single crystals free from defects greatly doped with rare earth elements (RE 3+ ) and having a high optical quality is still an unresolve d problem. Always, crystals of the niobate lithium contain a deficiency in lithium causing the appeara nce of intrinsic defects and thus a doping is requi red for the homogeneity. Our work was aimed to study the growth of Lithium niobate and their structural characterization, it focusses on congruent to stoic hiometric Yb: LiNbO 3 (LN) crystals. These crystals were synthesized with different doping concentrations of Yb3+ (1.0, 2.0, 3.0, 4.0, 5.0 mol%) by the LHPG method which is faster, less expensive and clean, T hree analysis techniques were used: Structural characterization made up 5.0 mol% by X-ray diffraction, Optical Microscopy and micro-Raman spectroscopy showed that the obtained material is single crystal , good optical quality and homogeneous. As we lnow, the results obtained with doping up to 5% are encouragi ng. Our approach provides excellent spectroscopic properties of crystals, low self-quenching property and can be used to applications such as solid-stat e laser. |
