Bonn 2000 – scientific programme

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Q: Quantenoptik

Q 40: Poster: Festkörperlaser

Q 40.8: Poster

Thursday, April 6, 2000, 16:30–19:30, Aula

Spectroscopic and laser properties of Yb³⁺-doped fluoride phosphate glasses — •Thomas Töpfer¹, Jens Philipps¹, Joachim Hein¹, Maximilian Darscht¹, Doris Ehrt², and Roland Sauerbrey¹ — ¹Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, D-07743 Jena, Germany — ²Otto-Schott-Institut für Glaschemie, Friedrich-Schiller-Universität Jena, Frauenhoferstr. 6, D-07743 Jena, Germany

Fluoride phosphate glasses exhibit a wide transmission range, low linear and nonlinear refractive index, low hydroxyl-content, tailorable spectroscopic properties by varying phosphate content, and high damage threshold as desirable for laser host materials. Possible doping levels with rare earth ions exceeding 10²¹cm⁻³ make these glasses attractive for laser diode pumping. Absorption and emission cross section calculations, fluorescence lifetime measurements, determination of small signal gain and saturation intensity and laser experiments are discussed for a variety of fluoride phosphate glasses in dependence on composition and structure.