Host dependent frequency upconversion of Yb3+/Tm3+-codoped oxyfluoride tellurite glasses

✍ Scribed by Shiqing Xu; Dawei Fang; Zaixuan Zhang; Liyan Zhang; Shilong Zhao; Zhonghong Jiang

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 144 KB
• Volume: 122
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/j.mseb.2005.05.013

✦ Synopsis

The upconversion luminescence properties of Yb 3+ /Tm 3+ -codoped oxyfluoride tellurite glasses under 980 nm excitation are investigated experimentally. The intense blue and relatively weak red emissions centered at 475 and 649 nm corresponding to the transitions 1 G 4 → 3 H 6 and 1 G 4 → 3 H 4 of Tm 3+ , respectively, are simultaneously observed at room temperature. The effect of PbF 2 on upconversion intensity is observed and discussed, and possible upconversion mechanisms are evaluated. The intense blue upconversion luminescence of Yb 3+ /Tm 3+ -codoped oxyfluoride tellurite glasses may be a potentially useful material for developing blue upconversion optical devices.