Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9829587 | Journal of Crystal Growth | 2005 | 7 Pages |
Abstract
Sc-doped near-stoichiometric LiNbO3 (Sc:SLN) crystals were grown from Li-rich solutions with Sc concentrations of up to 1.3Â mol% by a top-seeded solution-growth method. We investigated the Sc-doping effects on the effective distribution coefficient, photorefractive damage (optical damage), the OH-absorption peak position, transmittance spectra, the ordinary and extraordinary refractive indices (no and ne), and the electric field needed for domain inversion. The Sc:SLN crystals doped with a Sc-doping concentration of 0.4Â mol% or more showed no photorefractive damage. This critical Sc-doping concentration in the SLN crystal was one-fifth that in a congruent-melt composition LN (CLN) crystal which requires at least 2Â mol% Sc (1Â mol% Sc2O3) to suppress photorefractive damage. The 0.4Â mol% Sc doping needed to suppress photorefractive damage in the SLN crystal was also low compared to the 1Â mol% required for Mg doping. Except for no and ne, all of the measured properties were influenced by the Sc-doping effect.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Masaru Nakamura, Shunji Takekawa, Youwen Liu, Kenji Kitamura,