Abstract:
A method for manufacturing an optical article including the steps of providing a substrate tube; forming one or more cladding layers inside the substrate tube, the one or more cladding layers including an innermost cladding layer; forming a concentric fluorine reservoir adjacent to the innermost cladding layer; and forming a core adjacent to the fluorine reservoir and concentric with the one or more outer cladding layers. The fluorine concentration in the fluorine reservoir is higher than the fluorine concentration in either the core or the innermost cladding layer.
Abstract:
A quartz glass member, wherein when the composition thereof is represented by SiOx, x takes a value of 1.85 to 1.95, the concentration of hydrogen molecules contained therein is 1 X 10 molecules/cm to 5 X 10 molecules/cm , and the value of (A-B) is 0.002 cm or less, where A represents the absorption coefficient observed immediately before the termination of irradiation when the irradiation of ArF excimer laser light is carried out in 1 X 10 pulses at one pulse energy density of 2 mJ/cm and B represents a second absorption coefficient observed 600 seconds after the stop of the above ArF excimer laser light irradiation. The use of the quartz glass member in optical systems for illumination and projection in a projection aligner allows the reduction of variation in the illuminance in an exposure region on a reticle plane or a wafer, which leads to a uniform exposure.
Abstract translation:石英玻璃构件,当其组成由SiO x表示时,x取1.85〜1.95的值,其中所含的氢分子的浓度为1×10 16分子/ cm 3〜5×10 18 >分子/ cm 3,(AB)的值为0.002cm -1以下,其中A表示在ArF准分子激光的照射下进行照射结束之前观察到的吸收系数 1×10 4脉冲,脉冲能量密度为2mJ / cm 2,B表示在停止上述ArF准分子激光照射后600秒观察到的第二吸收系数。 在投影对准器中用于照明和投影的光学系统中使用石英玻璃构件允许减少在掩模版平面或晶片上的曝光区域中的照度的变化,这导致均匀的曝光。
Abstract:
A synthetic quartz glass for optical use which is used through irradiation of rays of light from the ultraviolet region to the vacuum ultraviolet region, characterized in that the quartz glass contains fluorine and has a ratio of the intensity of a scattering peak at 2250 cm (I 2250) to that of a scattering peak at 800 cm (I 800), that is I 2250/I 800, in a laser Raman spectrum of 1 x 10 or less and an absorption coefficient of the light having a wave length of 245 nm of 2 x 10 cm or less.
Abstract translation:一种用于光学用途的合成石英玻璃,其通过从紫外线区域到真空紫外线区域的光线照射而被使用,其特征在于,所述石英玻璃含有氟并且具有在2250cm -1处的散射峰的强度比, 1×10 -4或更小的激光拉曼光谱中,在800cm -1(I 800)处的散射峰的峰值(I 2250)为I 2250 / I 800,吸收 波长245nm的光的系数为2×10 -3 cm -1以下。
Abstract:
An object of the present invention is to provide a synthetic silica glass optical material which exhibits excellent transmittance as well as durability for high output power vacuum ultraviolet rays, being emitted from, for example, ArF excimer lasers and Xe2 excimer lamps, and to provide a method for producing the same. A synthetic silica glass optical material for high output power vacuum ultraviolet rays made from ultra high purity synthetic silica glass for use in the wavelength region of from 165 to 195 nm, containing OH groups at a concentration of from 5 to 300 wtppm with a fluctuation width in OH group concentration ( DELTA OH/cm) of 10 wtppm or less, containing hydrogen molecules at a concentration of from 1 x 10 to 1 x 10 molecule/cm with a fluctuation width in hydrogen molecule concentration ( DELTA H2/cm) of 1 x 10 molecule/cm or lower, and containing chlorine at a concentration of 50 wtppm or lower. Also claimed is a method for producing the same.
Abstract translation:本发明的目的是提供一种合成二氧化硅玻璃光学材料,其从例如ArF准分子激光器和Xe2准分子灯发射的高输出功率的真空紫外线具有优异的透射率和耐久性,并提供 其制造方法 一种用于高浓度合成石英玻璃的高输出功率真空紫外线的合成二氧化硅玻璃光学材料,用于波长范围为165至195nm的OH基,其浓度为5至300重量ppm,具有波动宽度 在OH分子浓度(DELTA OH / cm)为10重量ppm以下,含有浓度为1×10 17〜1×10 19分子/ cm 3的氢分子,氢分子的波动宽度 浓度(DELTA H2 / cm)为1×10 17分子/ cm 3以下,含有浓度为50重量ppm以下的氯。 还要求保护其的方法。
Abstract:
Bromine doping of silica glass is demonstrated. Bromine doping can be achieved with SiBr4 as a precursor. Bromine doping can occur during heating, consolidation or sintering of a porous silica glass body. Doping concentrations of bromine increase with increasing pressure of the doping precursor and can be modeled with a power law equation in which doping concentration is proportional to the square root of the pressure of the doping precursor. Bromine is an updopant in silica and the relative refractive index of silica increases approximately linearly with doping concentration. Bromine can be used as a dopant for optical fibers and can be incorporated in the core and/or cladding regions. Core doping concentrations of bromine are sufficient to permit use of undoped silica as an inner cladding material in fibers having a trench in the refractive index profile. Co-doping of silica glass with bromine and chlorine is also demonstrated.
Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen eines Quarzglaskörpers beinhaltend die Verfahrensschritte i.) Bereitstellen eines Siliziumdioxidgranulats, erhältlich aus einem Siliziumdioxidpulver, wobei das Siliziumdioxidgranulat eine größere Partikelgröße aufweist als das Siliziumdioxidpulver; ii.) Bilden einer Glasschmelze aus dem Siliziumdioxidgranulat und iii.) Bilden eines Quarzglaskörpers aus zumindest einem Teil der Glasschmelze, wobei der Schmelztiegel mindestens einen Einlass und einen Auslassbeinhaltet, wobei mindestens ein Teil der Glasschmelze durch den Auslass des Schmelztiegels entnommen wird. Die Erfindung betrifft weiterhin einen Quarzglaskörper, der durch dieses Verfahren erhältlich ist. Weiterhin betrifft die Erfindung einen Lichtleiter, ein Leuchtmittel und einen Formkörper, die jeweils durch Weiterverarbeiten des Quarzglaskörpers erhältlich sind.
Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen eines Quarzglaskörpers beinhaltend die Verfahrensschritte i.) Bereitstellen eines Siliziumdioxidgranulats, ii.) Bilden einer Glasschmelze aus dem Siliziumdioxidgranulat und iii.) Bilden eines Quarzglaskörpers aus zumindest einem Teil der Glasschmelze, wobei Schritt i.) die Schritte I. Bereitstellen eines Siliziumdioxidpulvers und II. Verarbeiten des Pulvers zu einem Siliziumdioxidgranulat umfassend das Sprühtrocknen einer Siliziumdioxidaufschlämmung unter Verwendung einer Düse umfasst. Die Düse weist eine Kontaktfläche zu der Aufschlämmung aus Glas, Kunststoff oder einer Kombination davon auf. Die Erfindung betrifft weiterhin einen Quarzglaskörper, der durch dieses Verfahren erhältlich ist. Weiterhin betrifft die Erfindung die Herstellung eines Siliziumdioxidgranulats. Die Erfindung betrifft außerdem einen Lichtleiter, ein Leuchtmittel und einen Formkörper, die jeweils durch Weiterverarbeiten des Quarzglaskörpers erhältlich sind.
Abstract:
A co-doped optical fiber is provided having an attenuation of less than about 0.17 dB/km at a wavelength of 1550 nm. The fiber includes a core region in the fiber having a graded refractive index profile with an alpha of greater than 5. The fiber also includes a first cladding region in the fiber that surrounds the core region. Further, the core region has an effective refractive index of about -0.10% to about +0.05% compared to pure silica. In addition, the core region includes silica that is co-doped with chlorine at about 1.2% or greater by weight and fluorine between about 0.1% and about 1% by weight.
Abstract:
An optical fiber has a structure that can effectively decrease both transmission and bending losses. The optical fiber is composed mainly of silica and includes a core part and cladding part surrounding the core part. The core part contains chlorine to have a larger refractive index than that of pure silica, and the cladding part contains fluorine to have a smaller refractive index than that of pure silica. The peak ratio of the difference in refractive index between the core part and pure silica to the refractive index of pure silica is greater than 0.05 %.