中国物理B ›› 2013, Vol. 22 ›› Issue (9): 94201-094201.doi: 10.1088/1674-1056/22/9/094201

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Influences of Mg2+ ion on dopant occupancy and upconversion luminescence of Ho3+ ion in LiNbO3 crystal

代丽a b, 徐超c, 张颖a, 李大勇a, 徐玉恒c   

  1. a School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China;
    b Applied Science College, Harbin University of Science and Technology, Harbin 150080, China;
    c Department of the Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2012-11-14 修回日期:2013-03-25 出版日期:2013-07-26 发布日期:2013-07-26
  • 基金资助:
    Project supported by the China Postdoctoral Science Foundation (Grant No. 2012M520759 ) and the Science and Technology Research Project of Education Bureau of Heilongjiang Province, China (Grant No. 12531098).

Influences of Mg2+ ion on dopant occupancy and upconversion luminescence of Ho3+ ion in LiNbO3 crystal

Dai Li (代丽)a b, Xu Chao (徐超)c, Zhang Ying (张颖)a, Li Da-Yong (李大勇)a, Xu Yu-Heng (徐玉恒)c   

  1. a School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China;
    b Applied Science College, Harbin University of Science and Technology, Harbin 150080, China;
    c Department of the Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China
  • Received:2012-11-14 Revised:2013-03-25 Online:2013-07-26 Published:2013-07-26
  • Contact: Dai Li E-mail:daili198108@126.com
  • Supported by:
    Project supported by the China Postdoctoral Science Foundation (Grant No. 2012M520759 ) and the Science and Technology Research Project of Education Bureau of Heilongjiang Province, China (Grant No. 12531098).

摘要: The effects of a Mg2+ ion on the dopant occupancy and upconversion luminescence of a Ho3+ ion in LiNbO3 crystal are reported. The birefringence gradient of the crystal is measured to investigate the optical homogeneity. The X-ray powder diffraction spectrum and the upconversion luminescence are used to investigate defect structure and spectroscopic properties of Mg,Ho:LiNbO3. Under 808-nm excitation, blue, red, and very intense yellow-green bands are observed. Based on the energy levels of Ho3+ in LiNbO3, and the pump intensity dependence of the observed emission, an excitation scheme is presented. The upconversion emission spectra reveal an enhancement of upconversion intensity when the Mg2+ ions are introduced into Ho:LiNbO3. The main upconversion mechanism is discussed in this work.

关键词: Mg, Ho:LiNbO3, upconversion luminescence, optical homogeneity

Abstract: The effects of a Mg2+ ion on the dopant occupancy and upconversion luminescence of a Ho3+ ion in LiNbO3 crystal are reported. The birefringence gradient of the crystal is measured to investigate the optical homogeneity. The X-ray powder diffraction spectrum and the upconversion luminescence are used to investigate defect structure and spectroscopic properties of Mg,Ho:LiNbO3. Under 808-nm excitation, blue, red, and very intense yellow-green bands are observed. Based on the energy levels of Ho3+ in LiNbO3, and the pump intensity dependence of the observed emission, an excitation scheme is presented. The upconversion emission spectra reveal an enhancement of upconversion intensity when the Mg2+ ions are introduced into Ho:LiNbO3. The main upconversion mechanism is discussed in this work.

Key words: Mg, Ho:LiNbO3, upconversion luminescence, optical homogeneity

中图分类号:  (Diffraction and scattering)

  • 42.25.Fx
42.65.-k (Nonlinear optics) 74.25.Gz (Optical properties)