Upconversion Luminescence from Ho3+ and Yb3+ Codoped α-NaYF4 Single Crystals

Content Provider	Semantic Scholar
Author	Zhang, Jiazhong Xia, Haiping Yang, Shuo Jiang, Yongzhang Xue-Mei, Gu Zhang, Jincheng Jiang, Haochuan Chen, Bao-Jiu
Copyright Year	2015
Abstract	The Ho3+/Yb3+ co-doped α-NaYF4 single crystal was grown successfully for the first time by a modified Bridgman method in which KF was used as assisting flux and a large temperature gradient (70–90 °C/cm) of solid-liquid interface was adopted. Upconversion emissions at green ∼544 nm, red ∼657 and ∼751 nm were obtained under 980 nm laser diode excitation. The intensity at ∼544 nm was much stronger than those of ∼657 and ∼751 nm. The mechanisms of the upconversion emissions were investigated by studying the relationship between the upconversion intensity and pump power. The optimized Yb3+ concentration was about 8.08mol% when Ho3+ concentration was hold at about 1.0mol%. The results showed that Ho3+/Yb3+ doped α-NaYF4 single crystal was a possible candidate upconversion material for the green solid-state laser.
Starting Page	351
Ending Page	354
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1063/1674-0068/28/cjcp1503042
Volume Number	28
Alternate Webpage(s)	http://cjcp.ustc.edu.cn/hxwlxb_en/ch/reader/create_pdf.aspx?file_no=150316042&flag=1&quarter_id=3&year_id=2015
Alternate Webpage(s)	https://doi.org/10.1063/1674-0068%2F28%2Fcjcp1503042
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article