Abstract
The physical properties including refractive index, Abbe number, nonlinear refractive index, microhardness and thermal expansion coefficient, and spectroscopic properties ofYb3+-doped fluorophosphate laser glasses were investigated. The results show that due to the addition of fluoride, mechanical and thermal properties are promoted, emission cross-sectionσemiis also greatly enhanced. The largest gain coefficientσemi·τm(0.824 pm2·ms) can be obtained with the minimum pump intensityImin(1.112 kw/cm2). This kind ofYb3+-doped fluorophosphate glass is an excellent candidate material forYb3+-doped host for high-power generation.
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