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 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 Si02 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 Si02 granulate of spherical porous granular particles with a moisture content of less than 35 wt. % and a density of at least 0.95 g/cm , c) drying and purification of the Si02 granulate, by heating to a temperature of at least 1000 DEG C to form doped porous Si02 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 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:
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 Si02 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 Si02 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 Si02 granulate, by heating to a temperature of at least 1000 °C to form doped porous Si02 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 in simplified Chinese:本发明提供了一种折射率nd为1.78~1.95、阿贝数ν d为32~50的高折射低分散特性的光学玻璃,且玻璃组成中不含GeO2,不易失透。光学玻璃,以阳离子%表示,包括:Si4+:1~20%;B3+:25~60%;La3+:10~40%;Y3+:0~15%;Nb5+:0~20%;Ti4+:0~15%;Ta5+:0~10%;W6+:0~5%;Zr4+:0~15%;Zn2+:0~10%;Bi3+:0~10%。本发明提供了透过率优良的光学玻璃,并且提供一种由所述光学玻璃形成的玻璃预制体和光学组件。根据上述光学玻璃以及由上述玻璃预制件或光学组件坯料制造的光学组件例如透镜等,能够用于光学系统。
Abstract in simplified Chinese:本发明提供了一种折射率nd为1.78~1.95、阿贝数νd为32~50的高折射低分散特性的光学玻璃,且玻璃组成中不含GeO2,不易失透。光学玻璃,以阳离子%表示,包括:Si4+:1~20%;B3+:25~60%;La3+:10~40%;Y3+:0~15%;Nb5+:0~20%;Ti4+:0~15%;Ta5+:0~10%;W6+:0~5%;Zr4+:0~15%;Zn2+:0~10%;Bi3+:0~10%。本发明提供了透过率优良的光学玻璃,并且提供一种由所述光学玻璃形成的玻璃预制体和光学组件。根据上述光学玻璃以及由上述玻璃预制件或光学组件坯料制造的光学组件例如透镜等,能够用于光学系统。