Abstract:
The invention relates to a method for producing a doped SiO2 slurry in which an SiO2 suspension is brought into interaction with at least one doping solution, wherein the SiO2 suspension and/or the doping solution act on one another in the form of an atomised spray, the average droplet diameter of which is in the range between 10 μm and 100 μm. The invention further relates to the use of an SiO2 slurry doped by the atomised spray method for the production of doped quartz glass, particularly for the production of laser-active quartz glass.
Abstract:
An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5.
Abstract:
The X-ray opaque glass is characterized by a composition, in mol %, of SiO2, 75-98; Yb2O3, 0.1 to 40; and ZrO2, 0 to 40. Preferred embodiments of the glass are free of Al2O3 and B2O3. The glass is produced from the glass batch by melting at a temperature of at least 1500° C. in an iridium or iridium alloy vessel with the assistance of high-frequency radiation. In preferred embodiments of the glass production process at least one raw material ingredient is present in the batch as a nanoscale powder. The glass is useful in dental applications, optical applications, and biomedical applications, or for photovoltaics, or as a target material in PVD processes.
Abstract translation:X射线不透明玻璃的特征在于以摩尔%计的SiO 2,75-98的组成; Yb2O3,0.1〜40; 和ZrO 2,0至40.玻璃的优选实施方案不含Al 2 O 3和B 2 O 3。 在高频辐射的帮助下,通过在铱或铱合金容器中在至少1500℃的温度下熔融从玻璃批料中制造玻璃。 在玻璃制备方法的优选实施方案中,至少一种原料成分以批量存在于纳米级粉末中。 该玻璃可用于牙科应用,光学应用,生物医学应用,或光伏发电,或作为PVD工艺中的靶材料。
Abstract:
The invention relates to a method for the economic production of a blank for a component made from laser-active quartz glass in any form or dimension. The method comprises the following method steps: a) preparation of a dispersion with a solids content of at least 40 wt. %, comprising SiO2 nanopowder and doping agents, including a cation of the rare earth metals and transition metals in a fluid, b) granulation by agitation of the dispersion, with removal of moisture to form a doped SiO2 granulate of spherical porous granular particles with a moisture content of less than 35 wt. % and a density of at least 0.95 g/cm3, c) drying and purification of the SiO2 granulate, by heating to a temperature of at least 1000° C. to form doped porous SiO2 grains with an OH content of less than 10 ppm and d) sintering or fusing the doped SiO2 grains in a reducing atmosphere to give the blank made from doped quartz glass.
Abstract:
The invention relates to a method for the economic production of a blank for a component made from laser-active quartz glass in any form or dimension. The method comprises the following method steps: a) preparation of a dispersion with a solids content of at least 40 wt. %, comprising SiO2 nanopowder and doping agents, including a cation of the rare earth metals and transition metals in a fluid, b) granulation by agitation of the dispersion, with removal of moisture to form a doped SiO2 granulate of spherical porous granular particles with a moisture content of less than 35 wt. % and a density of at least 0.95 g/cm3, c) drying and purification of the SiO2 granulate, by heating to a temperature of at least 1000° C. to form doped porous SiO2 grains with an OH content of less than 10 ppm and d) sintering or fusing the doped SiO2 grains in a reducing atmosphere to give the blank made from doped quartz glass.
Abstract:
Es wird ein Verfahren angegeben, das die wirtschaftliche Herstellung eines Rohlings für ein Bauteil aus laseraktivem Quarzglas in beliebiger Form und Abmessung ermöglicht. Das Verfahren umfasst die folgenden Verfahrensschritte: a) Bereitstellen einer Dispersion mit einem Feststoffgehalt von mindestens 40 Gew.-%, die Si0 2 -Nanopulver sowie Dotierstoffe umfassend ein Kation der Seltenerdmetalle und der Übergangsmetalle in einer Flüssigkeit enthält, b) Granulation durch Bewegen der Dispersion unter Entzug von Feuchtigkeit bis zur Bildung eines dotierten Si0 2 -Granulats aus sphärischen, porösen Granulatkörnern mit einem Feuchtigkeitsgehalt von weniger als 35 Gew.-% und mit einer Dichte von mindestens 0,95 g/cm 3 , c) Trocknen und Reinigen des Si0 2 -Granulats durch Aufheizen auf eine Temperatur von mindestens 1000 °C unter Bildung einer dotierten, porösen Si0 2 Körnung mit einem OH-Gehalt von weniger als 10 ppm; und d) Sintern oder Erschmelzen der dotierten SiO 2 -Körnung in einer reduzierend wirkenden Atmosphäre unter Bildung des Rohlings aus dotiertem Quarzglas.
Abstract:
Die Erfindung betrifft ein röntgenopakes Glas aus dem System SiO 2 und Yb 2 O 3 , das gegebenenfalls Zusatzkomponenten zur Anpassung der Eigenschaften enthalten kann, sowie ein Verfahren zu seiner Herstellung und seine Verwendung insbesondere als Dentalglas.
Abstract:
A light amplifying optical fiber capable of restricting a reduction in amplifying efficiency and non-linearity caused by the concentration quenching of erbium ions. At least one of rare earth elements, having an ion radius at least 70% and up to 130% of that of erbium and excluding erbium, for example, Yb, is added to the core portion of an erbium-ion-added light amplifying optical fiber.
Abstract:
A system and method for making a thin sintered silica sheet is provided. The method includes providing a soot deposition surface and forming a glass soot sheet by delivering a stream of glass soot particles from a soot generating device to the soot deposition surface. The method includes providing a sintering laser positioned to direct a laser beam onto the soot sheet and forming a sintered glass sheet from the glass soot sheet by delivering a laser beam from the sintering laser onto the glass soot sheet. The sintered glass sheet formed by the laser sintering system or method is thin, has low surfaces roughness and/or low contaminant levels.