Effect of Fe impurity on the optical loss of Nd-doped phosphate laser glass

• 作 者: 徐永春 李顺光 胡丽丽 陈伟
• 机 构: Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences,Shanghai 201800,Shanghai
• 出 处: Chinese Optics Letters
• 发表日期: 2005年12期
• 关键词: impurity glasses melting precisely valence doping negligible fitting oxidizing c

The optical loss coefficient at 1053-nm wavelength, influenced by Fe ions in N31-type Nd-doped phosphate laser glass, was determined precisely and analyzed in detail. It is found that the optical loss coefficient per unit of Fe concentration (cm-1/ppmw) increases with Fe concentration in the range of 0-300 ppmw, but it approaches a constant as the Fe concentration is larger than 300 ppmw. Such a concentration effect is due to a shift in the redox equilibrium between Fe3+ and Fe2+ ions in the glass. The effect of oxygen pressure, temperature, and variable valence states of other metal ions in glass samples on the optical loss is also discussed.

The optical loss coefficient at 1053-nm wavelength, influenced by Fe ions in N31-type Nd-doped phosphate laser glass, was determined precisely and analyzed in detail. It is found that the optical loss coefficient per unit of Fe concentration (cm -1 / ppmw) increases with Fe concentration in the range 0-300 ppmw, but it approaches a constant as the Fe concentration is greater than 300 ppmw. Such a concentration effect is due to a shift in the redox equilibrium between Fe3 + and Fe2 + ions in the glass. The effect of oxygen pressure, temperature, and variable valence states of other metal ions in glass samples on the optical loss is also discussed.