Abstract:
An ideal quartz glass for a wafer jig for use in an environment having an etching effect is distinguished by both high purity and high resistance to dry etching. To indicate a quartz glass that substantially fulfills these requirements, it is suggested according to the invention that the quartz glass is doped with nitrogen at least in a near-surface area, has a mean content of metastable hydroxyl groups of less than 30 wt ppm and that its fictive temperature is below 1250° C. and its viscosity is at least 1013 dPa·s at a temperature of 1200° C. An economic method for producing such a quartz glass comprises the following method steps: melting an SiO2 raw material to obtain a quartz glass blank, the SiO2 raw material or the quartz glass blank being subjected to a dehydration measure, heating the SiO2 raw material or the quartz glass blank to a nitriding temperature in the range between 1050° C. and 1850° C. in an ammonia-containing atmosphere, a temperature treatment by means of which the quartz glass of the quartz glass blank is set to a fictive temperature of 1250° C. or less, and a surface treatment of the quartz glass blank with formation of the quartz glass jig.
Abstract:
The present invention provides an optical synthetic quartz glass material which substantially does not cause changes in transmitted wave surface (TWS) by solarization, compaction (TWS delayed), rarefaction (TWS progressed) and photorefractive effect when ArF excimer laser irradiation is applied at a low energy density, e.g. at energy density per pulse of 0.3 mJ/cm2 or less. The present invention further provides a method for manufacturing the same. In order to solve the above-mentioned problems, the optical synthetic quartz glass material of the present invention is characterized in that, in a synthetic quartz glass prepared by a flame hydrolysis method using a silicon compound as a material, the followings are satisfied that the amount of SiOH is within a range of more than 10 ppm by weight to 400 ppm by weight, content of fluorine is 30 to 1000 ppm by weight, content of hydrogen is 0.1×1017 to 10×1017 molecules/cm3 and, when the amounts of SiOH and fluorine are A and B, respectively, total amount of A and B is 100 ppm by weight or more and B/A is 0.25 to 25.
Abstract translation:本发明提供了一种光学合成石英玻璃材料,其在低温下施加ArF准分子激光照射时,通过太阳化,压实(TWS延迟),稀释(TWS进行)和光折射效应基本上不会引起透射波面(TWS)的变化 能量密度,例如 每个脉冲的能量密度为0.3mJ / cm 2以下。 本发明还提供一种制造该方法的方法。 为了解决上述问题,本发明的光学合成石英玻璃材料的特征在于,在使用硅化合物作为材料的火焰水解法制备的合成石英玻璃中,满足以下条件: SiOH的量在大于10重量ppm至400重量ppm的范围内,氟含量为30至1000重量ppm,氢含量为0.1×10 17至10 10 17分子/ cm 3,当SiOH和氟的量分别为A和B时,A和B的总量为100重量ppm以上,B / A为 0.25至25。
Abstract:
Fluorine-containing synthetic quartz glass is produced by feeding silica-forming material, hydrogen, and oxygen gases from a burner to a reaction zone, flame hydrolyzing the silica-forming material in the reaction zone to form particles of silica, depositing the silica particles on a rotatable substrate in the reaction zone to form a porous silica matrix, and heating and vitrifying the porous silica matrix in a fluorine compound gas-containing atmosphere. During formation of the porous silica matrix, the angle between the center axes of the silica matrix and the silica-forming reactant flame from the burner is adjusted to 90–120° so that the porous silica matrix has a density of 0.1–1.0 g/cm3 with a narrow distribution within 0.1 g/cm3. The resulting quartz glass has a high transmittance to light in the vacuum ultraviolet region below 200 nm.
Abstract translation:含氟合成石英玻璃是通过将二氧化硅形成材料,氢气和氧气从燃烧器送入反应区而产生的,火焰水解反应区中二氧化硅形成材料,形成二氧化硅颗粒,将二氧化硅颗粒沉积在 反应区中的可旋转基底,形成多孔二氧化硅基质,并在含氟化合物气体的气氛中加热和玻璃化多孔二氧化硅基质。 在形成多孔二氧化硅基体期间,将二氧化硅基体的中心轴线与来自燃烧器的形成二氧化硅的反应物火焰之间的角度调节至90-120°,使得多孔二氧化硅基质的密度为0.1-1.0g / cm 3,窄分布在0.1g / cm 3以内。 所得的石英玻璃对于低于200nm的真空紫外线区域的光具有高透射率。
Abstract:
To provide an optical component of quartz glass for use in a projection lens system for immersion lithography with an operating wavelength below 250 nm, which is optimized for use with linearly polarized UV laser radiation and particularly with respect to compaction and birefringence induced by anisotropic density change, it is suggested according to the invention that the quartz glass should show the combination of several properties: particularly a glass structure essentially without oxygen defects, a mean content of hydroxyl groups of less than 60 wt ppm, a mean content of fluorine of less than 10 wt ppm, a mean content of chlorine of less than 1 wt ppm. A method for producing such an optical component comprises the following method steps: producing and drying an SiO2 soot body under reducing conditions and treating the dried soot body before or during vitrification with a reagent reacting with oxygen defects of the quartz glass structure.
Abstract:
The present invention provides an optical fiber providing high photosensitivity in the absence of hydrogen loading as well as a low numerical aperture. One aspect of the present invention relates to an optical fiber including a core, the core comprising silica doped with at least about 6 mol % germania and at least about 0.9 wt % fluorine; and a cladding surrounding the core. The optical fiber of the present invention is suitable for the production of fiber Bragg gratings.
Abstract:
Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphere, removing water from the transport process, or combinations thereof. In a first embodiment, substantially water-free soot, preforms or glass are achieved by using a hydrogen-free fuel, such as carbon monoxide, in the deposition process. In another embodiment, a soot producing burner has parameters that enable operation on a substantially hydrogen-free fuel. End burners, which minimize water production, are also described. Such water-free methods are useful in depositing fluorine-doped soot because of the low water present and the efficiency in which fluorine is incorporated. In another embodiment, glassy barrier layer methods and apparatus are described for minimizing dopant migration, especially fluorine. Laser and induction methods and apparatus for forming the barrier layer are depicted. A chlorine, fluorine and silica precursor, such as chlorofluorosilane, may be utilized to form fluorinated soot. Other methods and apparatus are directed to combinations of conventional and substantially water-free processes. One embodiment is directed to combustion enhancing additives for addition to the substantially hydrogen-free fuels. The methods and apparatus in accordance with the invention are particularly useful for producing photomask substrates and optical fiber preforms.
Abstract:
The invention provides coated optical lithography elements and methods of coating optical elements, and particularly optical photolithography elements for use in below 240 nm optical photolithography systems utilizing vacuum ultraviolet light (VUV) lithography wavelengths no greater than about 193 nm, such as VUV projection lithography systems utilizing wavelengths in the 193 nm or 157 nm region. The optical devices manipulate vacuum ultraviolet lithography light less than 250 nm utilizing a deposited silicon oxyfluoride film. The deposited silicon oxyfluoride optical coating assists in the manipulation of incident light and protects the underlying optical materials, layers, and surfaces.
Abstract:
A co-doped silicate optical waveguide having a core including silica, and oxides of aluminum, germanium, erbium and thulium. The composition concentrations are: Er from 15 ppm to 3000 ppm; Al from 0.5 mol % to 12 mol %; Tm from 15 ppm to 10000 ppm; and Ge from 1 mol % to 20 mol %. In a specific embodiment, the concentration of Er is from 150 ppm to 1500 ppm; Al is from 2 mol % to 8 mol %; and Tm is from 15 ppm to 3000 ppm. A boron-less cladding surrounds the core.
Abstract:
Disclosed is a method for fabricating high-purity silica glass using a sol-gel processing that includes the steps of: (a) mixing a deionized water with a fluorine compound and a dispersion agent to prepare an aqueous premix solution; (b) mixing the aqueous premix solution with a fumed silica; (c) mixing the resulting mixture to form a dispersed sol; (d) aging the sol at the ambient temperature to stabilize silica particles; and, (e) removing air voids from the sol and adding a gelation agent.
Abstract:
A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cmnull1 (I2250) to the scattering peak intensity of 800 cmnull1 (I800), i.e. I2250/I800, of at most 1null10null4 in the laser Raman spectrum, and which has an absorption coefficient of light of 245 nm of at most 2null10null3 cmnull1.
Abstract translation:一种用于光学用的合成石英玻璃,其用于通过在含有氟的紫外线区域至真空紫外线区域的范围内的光照射而使用,该散射峰强度比例为2250cm <上标> -1 >(I <下标> 2250 highlight>)到800 cm <上标> -1>(I <下标> 800 highlight>)的散射峰强度,即I <下标> 2250 highlight> / I 在激光拉曼光谱中,最多为1×10 <上标> -4>的<下标> 800 highlight>,其吸光系数为245nm,最多为2×10 <上标> -3> cm -1>。