Laser Chemistry 
Volume 2008 (2008), Article ID 656490, 6 pages
doi:10.1155/2008/656490
Research Article

Physical and Spectroscopic Properties of Yb3+-Doped Fluorophosphate Laser Glasses

Shujiang Liu1 and Anxian Lu2

 1Glass and Ceramic Key Laboratory, Shandong Institute of Light Industry, Jinan 250353, China
2School of Materials Science and Engineering, Central South University, Changsha 410083, China
Received 24 April 2008; Accepted 4 August 2008

Recommended by Saulius Juodkazis

Abstract

The physical properties including refractive index, Abbe number, nonlinear refractive index, microhardness and thermal expansion coefficient, and spectroscopic properties of Yb3+-doped fluorophosphate laser glasses were investigated. The results show that due to the addition of fluoride, mechanical and thermal properties are promoted, emission cross-section σemi is also greatly enhanced. The largest gain coefficient σemi·τm (0.824 pm2·ms) can be obtained with the minimum pump intensity Imin (1.112 kw/cm2). This kind of Yb3+-doped fluorophosphate glass is an excellent candidate material for Yb3+-doped host for high-power generation.