摘要:
Fused silica articles exhibiting improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum. The articles also exhibit induced transmission when irradiated with a laser.
摘要:
A composite material has a quartz glass phase and a complex compound phase compounded with the quartz glass phase, which is made of one or more compounds selected from a group of silicon carbide, silicon nitride, silicon, titanium nitride and titanium carbide, as a main ingredient. The composite material can be used instead of quartz glass, and can prevent the generations of microcrack, tipping and particles after the mechanical working.
摘要:
A silica glass optical material for transmitting light with a wavelength of from 155 to 195 nm emitted from an excimer laser or an excimer lamp, which comprises silica glass optical material of ultrahigh purity, containing from 1 to 100 wtppm of OH groups, from 5×1016 to 5×1019 molecules/cm3 of H2, and from 10 to 10,000 wtppm of F, but substantially free from halogens other than F, and having a fluctuation in refractive index, &Dgr;n, of from 3×10−6 to 3×10−7.
摘要翻译:一种二氧化硅玻璃光学材料,用于从准分子激光或准分子灯发射波长为155至195nm的光,其包括含有1至100重量ppm的OH基团的超高纯度的石英玻璃光学材料,从5×10 16至 5×1019分子/ cm 3的H 2和10至10,000重量ppm的F,但基本上不含F以外的卤素,并且具有3×10 -6至3×10 -7的折射率DELTAn。
摘要:
Fused silica stepper lens for photolithographic application are disclosed which are resistant to laser-induced damage, specifically, compaction or densification which can lead to an increase in the optical path length of the lens. The figure compares the phase front distortions of a standard fused silica with the phase front distortions observed in two inventive stepper lens fused silica.
摘要:
Fused silica articles containing at least 50 ppb aluminum are disclosed. The fused silica articles containing these levels of aluminum exhibit improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum.
摘要:
A synthetic quartz glass to be used for light with a wavelength of from 150 to 200 nm, wherein the OH group concentration is at most 100 ppm, the hydrogen molecule concentration is at most 1×1017 molecules/cm3, reduction type defects are at most 1×1015 defects/cm3, and the relation between &Dgr;k163 and &Dgr;k190, as between before and after irradiation of ultraviolet rays, satisfies 0
摘要翻译:用于波长为150〜200nm的光的合成石英玻璃,OH基浓度为100ppm以下,氢分子浓度为1×10 17分子/ cm 3以下,还原型缺陷为1×1015以下的缺陷 / cm3,紫外线照射前后的DELTAk163与DELTAk190之间的关系满足0
摘要:
A synthetic quartz powder obtained by calcining a powder of silica gel, characterized in that white devitrification spots having sizes of larger than 20 &mgr;m in diameter formed in an ingot obtained by vacuum melting the synthetic quartz powder at a temperature of from 1780 to 1800° C. to form an ingot, followed by maintaining the ingot at a temperature of 1630° C. for 5 hours, are at most 10 spots/50 g.
摘要:
A silica glass is provided for use in an optical system processing an excimer laser beam. The silica glass has a molecular hydrogen concentration of about 5×1018 molecules/cm3 or less and is substantially free from defects which become precursors susceptible to an one-photon absorption process and a two-photon absorption process upon irradiation of the excimer laser beam to the silica glass.
摘要翻译:提供石英玻璃用于处理准分子激光束的光学系统中。 二氧化硅玻璃的分子氢浓度约为5×1018分/ cm 3或更低,并且基本上没有成为对单光子吸收过程敏感的前体的缺陷和在将准分子激光束照射到二氧化硅上时的双光子吸收过程 玻璃。
摘要:
An object of the present invention is to provide a synthetic quartz glass optical material having a high optical transmittance for a radiation 157 nm in wavelength emitted from F2 excimer laser and a high resistance against irradiation of a F2 excimer laser radiation, yet having a uniformity suitable for such a fine patterning using a F2 excimer laser, and to provide an optical member using the same. The problems above are solved by a synthetic quartz glass optical material for F2 excimer lasers having an OH group concentration of 0.5 ppm or lower, a fluorine concentration of 0.1 to 2 mol %, a hydrogen molecule concentration of 5×1016 molecules/cm3 or lower, a difference between the maximum and minimum fluorine concentrations within 20 mol ppm, and a difference between the maximum and minimum refraction indices of 2×10−5 or lower.
摘要翻译:本发明的目的是提供一种合成石英玻璃光学材料,其对于从F2准分子激光器发射的波长为157nm的辐射具有高的透光率,并且具有高的对F2准分子激光辐射照射的抗性,但具有适合的均匀性 对于使用F2准分子激光器的精细图案化,并提供使用其的光学部件。 上述问题由OH基浓度为0.5ppm以下,氟浓度为0.1〜2mol%,氢分子浓度为5×10 16分子/ cm 2的F2准分子激光的合成石英玻璃光学材料解决, 3>以下,最大和最小氟浓度在20mol ppm内的差异,以及最大和最小折射率之间的差异为2×10 -5或更低。
摘要:
A photolithography apparatus has an exposure light source for emitting exposure light with a wavelength of 400 nm or less, a reticle with a pattern original image formed therein, an illumination optical system for illuminating the reticle with exposure light, a projection optical system for projecting the pattern image from the reticle onto a photosensitive plate and an alignment system for aligning the reticle and the photosensitive plate. At least some of the synthetic silica glass members composing the illumination optical system, the projection optical system and the reticle consist of synthetic silica glass members which, upon 1×104 pulse irradiation with an ArF excimer laser at an energy density from 0.1 &mgr;J/cm2·p to 200 mJ/cm2·p, have a loss factor no greater than 0.0050 cm−1 at 193.4 nm measured after irradiation, a hydrogen molecule concentration from 1×1016 molecules/cm3 to 2×1018 molecules/cm3 and a loss factor no greater than 0.0020 cm−1 before ultraviolet irradiation.
摘要翻译:一种光刻设备具有用于发射波长为400nm以下的曝光光的曝光光源,形成有图案原始图像的标线片,用曝光灯照亮该掩模版的照明光学系统,投影光学系统 从掩模版到感光板的图案图像和用于对准掩模版和感光板的对准系统。 构成照明光学系统的合成二氧化硅玻璃构件中的至少一部分,投影光学系统和掩模版由合成石英玻璃构件组成,在用能量密度为0.1μJ/ cm 2的ArF准分子激光器进行1×10 4脉冲照射时, cm 2 p至200mJ / cm 2,在照射后测量的193.4nm处的损耗因子不大于0.0050cm -1,氢分子浓度为1×10 16分子/ cm 2, 3> 2×10 18分子/ cm 3,并且在紫外线照射之前的损失因子不大于0.0020cm -1。