Chinese Optics Letters, 2005, 3 (12): 12701, Published Online: Jun. 6, 2006
Effect of Fe impurity on the optical loss of Nd-doped phosphate laser glass
160.2750 glass and other amorphous materials 160.6990 transition metal-doped materials 300.1030 absorption 140.3530 lasers neodymium
Abstract
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.
Yongchun Xu, Shunguang Li, Lili Hu, Wei Chen. Effect of Fe impurity on the optical loss of Nd-doped phosphate laser glass[J]. Chinese Optics Letters, 2005, 3(12): 12701.
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