Second-order optical nonlinear and luminescent properties of $Ba2TiSi2O8$ nanocrystallized glass Available to Purchase

The optical properties of $Ba2TiSi2O8$ nanocrystals in transparent crystallized glasses were investigated. The transparent nanocrystallized glass with $Ba2TiSi2O8$ crystals having a particle size of $∼200nm$ was fabricated by crystallization (at 760 °C for 1 h) of a glass with the stoichiometric composition of $Ba2TiSi2O8$⁠, i.e., $40BaO∙20TiO2∙40SiO2$ glass. Both visible second-harmonic generation (green light, 532 nm) and luminescence (blue light, $∼470nm$⁠) could be observed in the transparent $Ba2TiSi2O8$ nanocrystallized glass, demonstrating the optical multifunctional nanocrystallized material. It was suggested that the blue luminescence from the transparent $Ba2TiSi2O8$ nanocrystallized glass originated from the oxygen-related defects of the $SiO4$ unit in the $Ba2TiSi2O8$ nanocrystals.