Optical properties of Mg~(2+),Yb~(3+),and Ho~(3+) tri-doped LiNbO_3 crystals

• 作 者: 代丽 刘春蕊 谭超 阎哲华 徐玉恒
• 机 构: Applied Science College,Harbin University of Science and Technology,Department of Applied Chemistry,
• 出 处: Chinese Physics B
• 发表日期: 2017年04期
• 关键词: exposure pumping fabrication quantitatively inductively bands doping excitation

A series of LiNbO_3 crystals tri-doped with Mg~(2+),Yb~(3+),and Ho~(3+) are grown by the conventional Czochraski technique.The concentrations of Mg~(2+),Yb~(3+),and Ho~(3+) ions in Mg:Yb:Ho:LiNbO_3 crystals are measured by using an inductively coupled plasma atomic emission spectrometry.The x-ray diffraction is proposed to determine the lattice constant and analyze the internal structure of the crystal.The light-induced scattering of Mg:Yb:Ho:LiNbO_3 crystal is quantitatively described via the threshold effect of incident exposure energy flux.The exposure energy(E_r) is calculated to discuss the optical damage resistance ability.The exposure energy of Mg(7 mol):Yb:Ho:LiNbO3 crystal is 709.17 J/cm~2,approximately 425 times higher than that of the Mg(l mol):Yb:Ho:LiNbO_3 crystal in magnitude.The blue,red,and very intense green bands of Mg:Yb:Ho:LiNbO_3 crystal are observed under the 980-nm laser excitation to evaluate the up-conversion emission properties.The dependence of the emission intensity on pumping power indicates that the up-conversion emission is a two-photon process.The up-conversion emission mechanism is discussed in detail.This study indicates that Mg:Yb:Ho:LiNbO_3 crystal can be applied to the fabrication of new multifunctional photoluminescence devices.

A series of LiNbO 3 crystals tri-doped with Mg ~ (2 +), Yb ~ (3 +), and Ho ~ (3+) are grown by the conventional Czochraski technique.The concentrations of Mg ~ (2 + (3+), and Ho ~ (3+) ions in Mg: Yb: Ho: LiNbO_3 crystals are measured by using an inductively coupled plasma atomic emission spectrometry. The x-ray diffraction is proposed to determine the lattice constant and analyze the internal structure of the crystal. The light-induced scattering of Mg: Yb: Ho: LiNbO_3 crystal is quantitatively described the via effect of incident light energy. The exposure energy (E_r) is calculated to discuss the optical damage resistance ability. The exposure The energy of Mg (7 mol): Yb: Ho: LiNbO3 crystal is 709.17 J / cm ~ 2, approximately 425 times higher than that of the Mg (1 mol): Yb: Ho: LiNbO_3 crystal in magnitude. and very intense green bands of Mg: Yb: Ho: LiNbO 3 crystal are observed under the 980-nm laser excitation to evaluate the up-conversion emission properties. The dependence of the emission i ntensity on pumping power indicates that the up-conversion emission is a two-photon process. The up-conversion emission mechanism is discussed in detail. This study indicates that Mg: Yb: Ho: LiNbO_3 crystal can be applied to the fabrication of new multifunctional photoluminescence devices.