UV and visible upconversion luminescence in Er3+:YAG under red laser excitation

• 来源期刊: 中国物理（英文版）
• 关键词: upconversion luminescence dynamics Er3+:YAG
• 年，卷（期）: 2007,（6）
• 页码范围: 1650-1654
• 页数: 5页
• 语种: 英文

摘要

This paper reports that the ultraviolet and visible upconversion luminescence from the 4S3/2, 2G9/2 and 2Ps/2 levels have been observed in Er3+:YAG following 647.2 nm excitation of the 4F9/2 multiple. Upconversion luminescence intensity dependence on pump power was recorded. The measured decay profiles were theoretically fitted by kinetics theory and the basically good agreements were achieved. The results indicate that some energy transfer processes proposed to explain the observed upconversion phenomena are reasonable.