Preparation, structure, and properties of Yb3+ FP laser glass

Doris Ehrt; Thomas Toepfer

doi:10.1117/12.405273

25 October 2000 Preparation, structure, and properties of Yb³⁺FP laser glass

Doris Ehrt, Thomas Toepfer

Proceedings Volume 4102, Inorganic Optical Materials II; (2000) https://doi.org/10.1117/12.405273
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Conditions for preparing samples of Yb³⁺-doped fluoroaluminate glasses of high optical quality ((Delta) n -6), their structure, and optical properties have been studied while varying the phosphate (5 to 40 mol%) and the Yb³⁺ content (5 to 12 X 10²⁰ ions/cm³). Refractive index and dispersion increase the higher the phosphate content. Adding Nb₂O₅ to the glass composition or substituting phosphate by sulfate increases the non-linear refractive index, due to an enhanced asymmetry of the Yb³⁺ sites resulting in larger cross sections for absorption and emission. Depending on melt composition the fluorescence lifetime of the ²F_5/2 laser level drops from 2.0 and 1.1 ms when phosphate content is increased but it shows no concentration quenching at higher Yb³⁺-doping levels. Glasses exhibit a very low OH content with an absorption of less than 0.1 cm^-1 at around 3000 cm^-1.

Citation Download Citation

Doris Ehrt and Thomas Toepfer "Preparation, structure, and properties of Yb³⁺FP laser glass", Proc. SPIE 4102, Inorganic Optical Materials II, (25 October 2000); https://doi.org/10.1117/12.405273

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