Influence of B₂O₃ on broad infrared emissions from aluminosilicophosphate glass

Abstract

Abstract

Influence of B₂O₃ on broadband near infrared luminescence properties from Bi doped aluminosilicophosphate glass was investigated. It is interesting that the near infrared luminescence showed different behaviour under different pumping sources. In the case of 808 nm excitation, the infrared emission located at 1290 nm was observed, whose intensity increased with increasing B₂O₃ concentration. However, under a 690 nm excitation, the luminescence at 1110 nm decreased with increasing B₂O₃ concentration. We ascribed the infrared emissions at 1290 nm to X₂^(3/2)→X₁^(1/2) transition of Bi⁺ and the infrared emissions at 1110 nm to X₃A→X₁A transition of Bi²⁺ based on the energy matching conditions. The broadband infrared luminescent characteristics of the glasses indicate that they are promising for broadband optical fibre amplifiers and tunable lasers.

Keywords:

• Bismuth doped aluminosilicophosphate glass
• Optical properties
• Infrared luminescence

This work was supported by Natural Science Foundation of China (grant no. 51002068), National Science Foundation of Yunnan Province (grant on. 2010ZC038), Measurement and Analysis Foundation of Kunming University of Science and Technology (grant no. 2010066) and Open Foundation of Key Lab of Advanced Materials of Yunnan Province.