Title :
The effects of Zn2+ ion on the optical characteristics of Er3+ ion in Er:LiNbO3 and Er/Yb:LiNbO3 crystals
Author :
Shi, Liansheng ; Qu, Yunfei ; Li, Yang ; Jiang, Kunjiu ; Guo, Tiantian
Author_Institution :
College of Material Science and Engineering, Harbin University of Science and Technology, Harbin China
Abstract :
The Er3+/Zn2+:LiNbO3 and Er3+/Yb3+/Zn2+:LiNbO3crystals were grown by Czochralski technique. The effect of Zn2+ ions on the optical characteristics of Er3+ ion was discussed. Zn2+ ions doping leads to an increased 1.54 μm emission in Er:LiNbO3 crystal, and a decreased 1.54 μm emission in Er/Yb:LiNbO3 crystal. Under 980 nm excitation, a cross relaxation 4I11/2 + 4I11/2 → 4F7/2 + 4I15/2 is observed in Zn/Er:LiNbO3 crystal. The reduction of 1.54 μm emission is attribution to the CR processes, 4S3/2 + 4I15/2 → 4I9/2 + 4I13/2, 4S3/2 + 4I15/2 → 4I13/2 + 4I9/2 and 4I9/2 + 4I15/2 → 4I13/2 + 4I13/2.
Keywords :
crystal growth from melt; doping; erbium; fluorescence; infrared spectra; ion implantation; lithium compounds; optical materials; ytterbium; zinc; Czochralski technique; LiNbO3:Er,Yb,Zn; LiNbO3:Er,Zn; Zn2+ ion effect; cross relaxation; infrared emission; optical characteristics; upconversion fluorescence; wavelength 980 nm; Crystals; Erbium; Green products; Ions; Lithium niobate; Particle beam optics; Zinc; Er and Er/Yb-LiNbO3 crystal; Zn2+ ions; infrared emission; upconversion;
Conference_Titel :
Strategic Technology (IFOST), 2012 7th International Forum on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1772-6
DOI :
10.1109/IFOST.2012.6357580
