Growth of Near-Stoichiometric Lithium Tantalite Crystal and its Optical Characterization

Fan Wei Meng; Bin Xu; Qing Tian

doi:10.4028/www.scientific.net/AMR.900.333

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Growth of Near-Stoichiometric Lithium Tantalite Crystal and its Optical Characterization
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 900Growth of Near-Stoichiometric Lithium Tantalite...

Growth of Near-Stoichiometric Lithium Tantalite Crystal and its Optical Characterization

Abstract:

Near-stoichiometric lithium tantalite (LiTaO₃) crystals were grown by the top-seed solution pulling method in congruent melt with the addition of K₂O. The crystals were characterized by measurement of the ultraviolet absorption edge, ability of photo-damage resistance, and the domain structure analysis. Compared with the congruent crystal shows that, the ultraviolet absorption edge of the near-stoichiometric crystals has a blue shift towards a shorter wavelength and curie temperature is also improved; the domain structure of near-stoichiometric LiTaO3 crystals is hexagonal; and the photo-damage resistance of the crystals is greatly improved.