Schott Ag

Stefanie Hansen

Ute Woelfel

Bianca Schreder

Simone Monika Ritter

Ute Wölfel

Silke Wolff

Uwe Kolberg

Dirk Apitz

Thomas Kirsch

Thomas Weingaertner

Antoine Carré

Peter-Franz Skiba

Caroline De Luca

Alain Danielou

Ralf Biertuempfel

Thomas Weingärtner

Ralf Biertümpfel

Frank Wolff

A glass includes: a plurality of components (in wt.-%) as follows: a sum of a plurality of proportions of LiO, NaO and KO being in a range of from 5.0 to 30.0 wt.-%, a sum of a plurality of amounts of MnOand CrObeing at least 0.3 wt.-%, and a ratio of a plurality of proportions of MnO(in wt.-%) and CrO(in wt.-%) being in a range of from 1.5:1 to 12.5:1.

Optical component and glass composition as well as use thereof

The present disclosure relates to a glass having a refractive index of at least 1.7 as well as the use of the glass as a cladding glass of a solid-state laser. The disclosure also relates to a laser component comprising a core of doped sapphire and a cladding glass being placed on said core. The cladding glass is arranged on said core such that light exiting from the core due to parasitic laser activity can enter the cladding glass and can be absorbed there. Thus, a laser component with improved efficiency is obtained. The present disclosure also relates to a method for producing the laser component.

Cladding glass for solid-state lasers

A sealing glass is provided that includes SiO, AlOhaving a content of less than 2% by weight, is free of PbO except for unavoidable impurities, a coefficient of linear thermal expansion (α) of more than 10*10/K, a dielectric constant (ε) in the range from at least 7.10 to not more than 7.80 at a measurement frequency of 1 MHz and a temperature of 25° C., and a glass transition temperature (T) in a range from 400 to 550° C.

Sealing glass and use thereof

A glass includes the following components in % by weight: 2-10 wt-% SiO, 2-10 wt-% BO, 40-55 wt-% LaO, 4-11 wt-% GdO, 6-14 wt-% NbO, 8-18.5 wt-% TiO, and 5-11 wt-% ZrO. The glass has a refractive index nof at least 2.02, a sum of the portions of LaO, NbO, TiOand ZrOis at least 76.5% by weight, and a weight ratio of a sum of the portions of LaO, NbOand ZrOto the portion of TiOis at least 3.85:1.

Highly refractive glass

A pore-free ceramic is provided that has a high modulus of elasticity and a low coefficient of thermal expansion. A process for producing a corresponding ceramic is also provided. The pore free ceramic is a dimensionally stable substrate material in applications subjected to temperature gradients including semiconductor manufacture.

Pore-free ceramic component

Glasses are provided that are highly transparent and have very good resistance to solarisation. The resistance to solarisation is favoured to a special extent by the production method. The concentrations of reduced polyvalent ion species are reduced by targeted use of bubbling with an oxidising gas. Methods for producing glasses and to the uses thereof, particularly as core glasses in optical waveguides, are also provided.

Highly transmissive glasses with high solarisation resistance, use thereof and method for production thereof

The glasses of the present disclosure are highly transparent and have very good resistance to solarization. The resistance to solarization arises from the production method. The concentrations of reduced polyvalent ion species are reduced by targeted use of bubbling with an oxidizing gas. Methods for producing glasses and to the uses thereof, particularly as core glasses in optical waveguides, are also provided.

The invention relates to a filter glass comprising NaO and KO and the following (in % by weight on an oxide basis): 

Filter gas

The present invention relates to a glass having a refractive index of at least 1.7 as well as the use of the glass as a cladding glass of a solid-state laser. The invention also relates to a laser component comprising a core of doped sapphire and a cladding glass being placed on said core. The cladding glass is arranged on said core such that light exiting from the core due to parasitic laser activity can enter the cladding glass and can be absorbed there. The present invention also relates to a method for producing the laser component.

The present invention relates to optical glasses, in particular special short flint glasses (KZFS) and optical elements and components, which comprise these glasses, and use thereof and a method for producing such optical glasses. The optical glasses of the present invention are characterized by a pronounced short flint character and additionally by an excellent transmission and chemical resistance and workability. At that, the glasses of the invention can stand out due to lower costs of production caused by lower costs of raw materials and lower processing costs, due to their crystallization properties that can be handled also in smaller melting aggregates, and due to good environmental compatibility.

Optical glass having negative anomalous partial dispersion / special short flint glasses

Coloured glasses are provided that include a following composition in percent by weight, based on oxide of: 

Coloured glasses

Glass having an optimized degree of cross-linking of the phosphate component in the glass matrix is provided so that excellent weatherability is achieved. These glasses are fluorophosphate glasses that contain copper oxide as coloring component. The glasses can further contain coloring components and are obtainable in a method that includes a bubbling step.

Fluorophosphate glasses

The optical glass has a refractive index nof 1.945&#x2266;n&#x2266;1.97, an Abbe number &#x3bd;of 33&#x2266;&#x3bd;&#x2266;36, and a composition with the following components in amounts expressed in % of their cations, with respect to the total number of cations in the composition: B, 35-46; La, 25-35; Ta, 6-14; W, 6-13; Zr, 1-7; Gd, 0-5; Nb, 0-4; Y, 0-4; Ba, 0-2; &#x3a3; alkaline earth metal cations, 0-2, &#x3a3; La+Ta+W+Zr+Gd+Nb+Y&#x2267;50; and at least one fining agent, 0-0.3. Also a ratio of Bto Lais 1.1 to 1.6 and a ratio of Bto &#x3a3; Si+Bis &#x2267;0.5. The glass is free of lead, arsenic, Ti, Th, Zn, F, and Hf.

Highly refractive and highly transparent optical glass

The lead- and arsenic-free optical glass has a refractive index nd of 1.55&#x2266;nd&#x2266;1.64, an Abbe number &#x3bd;d of 42&#x2266;&#x3bd;d&#x2266;65, and a low transition temperature Tg&#x2266;460&#xb0; C., good producibility and processability, and crystallization stability. The optical glass has a composition within the following range, in wt. % based on oxide content: The glass may also have a total content of SiO, BOand AlOthat is less than 9 wt. %. The glass may contain MgO, SrO, CaO and BaO, but the sum of these oxides is preferably at least 2 wt. % and at most 12 wt. %. The glass may contain at most 5 wt. % of each of LaO, TiO, NbO, at most 2 wt. % TaOand less than 1 wt. % fluorine.

Optical glass, method of making the optical glass, optical elements made with the optical glass and uses thereof

Lead and arsenic free, and preferably gadolinium and further preferably also fluorine free, optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive, laser technology and/or micro lens arrays have a refractive index of 1.91&#x2266;n&#x2266;2.05, an Abbe number of 19&#x2266;&#x3bd;&#x2266;25 and have a low transformation temperature, namely of less than or equal to 470&#xb0; C. and preferably of less than or equal to 450&#xb0; C., as well as good producability and processability and crystallization stability.

Growing community of inventors

Gensingen, Germany

Stefanie Hansen