Abstract:
The invention relates to an optical filter material made of doped quartz glass, which at a low dopant concentration exhibits spectral transmission as high as possible of at least 80% cm−1 for operating radiation of 254 nm, transmission as low as possible in the wave range below approximately 250 nm, and an edge wavelength λc within the wave range of 230 to 250 nm. It was found that this aim is achieved by doping comprising a gallium compound, which in the wave range below 250 nm has a maximum of an absorption band and thus determines the edge wave range λc.
Abstract:
A silica glass containing TiO2, which has a fictive temperature of at most 1,200° C., a F concentration of at least 100 ppm and a coefficient of thermal expansion of 0±200 ppb/° C. from 0 to 100° C.A process for producing a silica glass containing TiO2, which comprises a step of forming a porous glass body on a target quartz glass particles obtained by flame hydrolysis of glass-forming materials, a step of obtaining a fluorine-containing porous glass body, a step of obtaining a fluorine-containing vitrified glass body, a step of obtaining a fluorine-containing formed glass body and a step of carrying out annealing treatment.
Abstract:
The present invention relates to a TiO2-containing silica glass containing TiO2 in an amount of from 5 to 10 mass % and at least one of B2O3, P2O5 and S in an amount of from 50 ppb by mass to 5 mass % in terms of the total content.
Abstract translation:本发明涉及含有5〜10质量%的TiO 2和B 2 O 3,P 2 O 5,S中的至少一种的含TiO 2的二氧化硅玻璃,其量为50ppb〜5质量% 总内容
Abstract:
The present invention relates to a method for producing a silica glass substrate for an imprint mold, containing: obtaining a glass body from a glass-forming raw material containing an SiO2 precursor; machining the glass body into a glass substrate having a predetermined shape; and removing an affected layer on a surface of the glass substrate, to produce a silica glass substrate for an imprint mold having a fictive temperature distribution in a region from the surface to a depth of 10 μm on the side to be subjected to a transfer pattern formation of the glass substrate being within ±30° C.
Abstract:
The present invention provides a TiO2—SiO2 glass in which when used as an optical member for an exposure tool for EUVL, a thermal expansion coefficient is substantially zero at the time of irradiation with high-EUV energy light, and physical properties of a multilayer can be kept over a long period of time by releasing hydrogen from the glass. The present invention relates to a TiO2-containing silica glass having a fictive temperature of 1,100° C. or lower, a hydrogen molecule concentration of 1×1016 molecules/cm3 or more, and a temperature, at which a linear thermal expansion coefficient is 0 ppb/° C., falling within the range of from 40 to 110° C.
Abstract:
A low expansion glass substrate includes titania and silica and has a thermal expansivity with an average gradient less than 1 ppb/° C./° C. in a temperature range of 19° C. to 25° C.
Abstract:
In the nanoimprint lithography, a titania-doped quartz glass having a CTE of −300 to 300 ppb/° C. between 0° C. and 250° C. and a CTE distribution of up to 100 ppb/° C. at 25° C. is suited for use as nanoimprint molds.
Abstract:
An object of the present invention is to provide a TiO2-containing quartz glass substrate which, when used as a mold base for nanoimprint lithography, can form a concavity and convexity pattern having a dimensional variation falling within ±10%. The invention relates to a TiO2-containing quartz glass substrate: in which a coefficient of thermal expansion in the range of from 15 to 35° C. is within ±200 ppb/° C.; a TiO2 concentration is from 4 to 9 wt %; and a TiO2 concentration distribution, in a substrate surface on the side where a transfer pattern is to be formed, is within ±1 wt %.
Abstract translation:本发明的目的是提供一种含TiO 2的石英玻璃基板,其用作纳米压印光刻用的模具基底时,可以形成尺寸变化在±10%以内的凹凸图案。 本发明涉及一种含TiO 2的石英玻璃基板,其中15至35℃范围内的热膨胀系数在±200ppb /℃以内。 TiO 2浓度为4〜9重量%。 并且在要形成转印图案的一侧的基板表面中的TiO 2浓度分布在±1重量%以内。
Abstract:
The present invention provides a TiO2—SiO2 glass in which when used as an optical member for an exposure tool for EUVL, a thermal expansion coefficient is substantially zero at the time of irradiation with high-EUV energy light, and physical properties of a multilayer can be kept over a long period of time by releasing hydrogen from the glass. The present invention relates to a TiO2-containing silica glass having a fictive temperature of 1,100° C. or lower, a hydrogen molecule concentration of 1×1016 molecules/cm3 or more, and a temperature, at which a linear thermal expansion coefficient is 0 ppb/° C., falling within the range of from 40 to 110° C.
Abstract:
The present invention is to provide a TiO2—SiO2 glass having suitable thermal expansion properties as an optical member of an exposure tool for EUVL. The present invention relates to a TiO2-containing silica glass having a temperature, at which a coefficient of thermal expansion is 0 ppb/° C., falling within the range of 23±4° C. and a temperature width, in which a coefficient of thermal expansion is 0±5 ppb/° C., of 5° C. or more.