Spectroscopic properties and thermal stability of Er3+/Yb3+-codoped fluorophosphate glasses

• 来源期刊: 中国物理(英文版)
• 关键词: fluorophosphate glasses Judd-Ofelt parameters spectroscopic properties
• 年，卷（期）: 2005,（6）
• 页码范围: 1250-1254
• 页数: 5页
• 语种: 英文

摘要

A comprehensive study on the thermal stability and spectroscopic properties of Er3+/Yb3+-codoped Al(PO3)3-based fluorophosphate glasses is reported of the 1.5μm fibre amplifiers in this paper. From optical absorption spectra, the Judd-Ofelt parameters of Er3+ in the glasses and several important optical properties, such as the radiative transition probability, the branching ratio and the spontaneous emission probability, have been calculated by using Judd-Ofelt theory. The fluorophosphate glass exhibits broadband near-infrared emission at 1.53 μm with a full width at halfmaximum over 63nm, and a large calculated stimulated-emission cross-section of 6.85 × 10-21cm2.