High Quantum Efficiency and High Concentration Erbium-Doped Silica Glasses Fabricated by Sintering Nanoporous Glasses

• Published in: Journal of rare earths Vol. 24; no. 6; pp. 761 - 764
• Main Author: 达宁 乔延波 杨旅云 彭明营 汪晨 周秦岭 赵崇军 邱建荣 朱从善 陈丹平 赤井智子
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2006; Photo Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China%Photo Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310028, China%National Institute of Advanced Industrial Science and Technology, Osaka 563-8577, Japan
• Subjects: Er 3+ doped high silica glass; FWHM; quantum efficiency; rare earths; 纳米多孔玻璃烧结法; 量子效率; 铒掺杂; 高硅玻璃; quantum efficiency; Er 3+ doped high silica glass; FWHM; rare earths; Er3+ doped high silica glass
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(07)60025-8

A new method was used to prepare erbium-doped high silica （SiO2 % 〉 96 % ） glasses by sintering nanoporous glasses. The concentration of erbium ions in high silica glasses can be considerably more than that in silica glasses prepared by using conventional methods. The fluorescence of 1532 nm has an FWHM （Full Wave at Half Maximum） of 50 nm, wider than 35 nm of EDSFA （erbium-doped silica fiber amplifer）, and hence the glass possesses potential application in broadband fiber amplifiers. The Judd-Ofelt theoretical analysis reflects that the quantum efficiency of this erbium-doped glass is about 0.78, although the erbium concentration in this glass （6 × 10^3） is about twenty times higher than that in silica glass. These excellent characteristics of Er-doped high silica glass will be conducive to its usage in optical amplifiers and microchip lasers.